Issue:
Bug: [REFACTOR]: [Nuvei] Remove Default Case Handling



### :memo: Feature Description

- We utilize match statements to make pivotal decisions, such as generating requests based on the payment method type and managing responses received from the connector. 
- These conditions generally go hand in hand with enum variants. 
- Default case is used because a match statement needs to be exhaustive i.e. every variant needs to be covered. 
- So, if all the explicit cases are handled then default is used to handle the rest.
- Each connector have these match statements but many of them don’t provide reference to each variant in their default case, rather a `_` is put to handle all the other cases. 
- This approach carries a risk because developers may inadvertently overlook the need for explicit handling of the new cases.

### :hammer: Possible Implementation

- Instead of relying on a default match case `_`, developers should handle each and every variant explicitly. 
- By doing so, if there are any changes in the future, they can readily assess the impact of their modifications simply by compiling the code.
- You can check this PR for further reference https://github.com/juspay/hyperswitch/pull/1955

:bookmark: Note: All the changes needed should be contained within `hyperswitch/crates/router/src/connector/`


### :package: Have you spent some time checking if this feature request has been raised before?

- [X] I checked and didn't find a similar issue

### :package: Have you read the Contributing Guidelines?

- [X] I have read the [Contributing Guidelines](https://github.com/juspay/hyperswitch/blob/main/docs/CONTRIBUTING.md)

### :sparkles: Are you willing to submit a PR?


Pull request description:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [ ] Enhancement
- [X] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
- Fix issue #2278 
- Changes to be made : Remove default case handling
- Added all the ```Banknames``` (which are not ```NuveiBIC``` ) against the default case
- File changed: **```transformers.rs```** (crates/router/src/connector/nuvei/transformers.rs)

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

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2. `crates/router/src/configs`
3. `loadtest/config`
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## Motivation and Context
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If it fixes an open issue, please link to the issue here.

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## How did you test it?
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## Checklist
<!-- Put an `x` in the boxes that apply -->

- [ ] I formatted the code `cargo +nightly fmt --all`
- [ ] I addressed lints thrown by `cargo clippy`
- [ ] I reviewed the submitted code
- [ ] I added unit tests for my changes where possible
- [ ] I added a [CHANGELOG](/CHANGELOG.md) entry if applicable


Testing:

Patch:
diff --git a/crates/router/src/connector/nuvei/transformers.rs b/crates/router/src/connector/nuvei/transformers.rs
index 2fd1a9c272f..88ebe1d8dbe 100644
--- a/crates/router/src/connector/nuvei/transformers.rs
+++ b/crates/router/src/connector/nuvei/transformers.rs
@@ -490,11 +490,145 @@ impl TryFrom<api_models::enums::BankNames> for NuveiBIC {
             api_models::enums::BankNames::TriodosBank => Ok(Self::TriodosBank),
             api_models::enums::BankNames::VanLanschot => Ok(Self::VanLanschotBankiers),
             api_models::enums::BankNames::Moneyou => Ok(Self::Moneyou),
-            _ => Err(errors::ConnectorError::FlowNotSupported {
-                flow: bank.to_string(),
-                connector: "Nuvei".to_string(),
+
+            api_models::enums::BankNames::AmericanExpress
+            | api_models::enums::BankNames::AffinBank
+            | api_models::enums::BankNames::AgroBank
+            | api_models::enums::BankNames::AllianceBank
+            | api_models::enums::BankNames::AmBank
+            | api_models::enums::BankNames::BankOfAmerica
+            | api_models::enums::BankNames::BankIslam
+            | api_models::enums::BankNames::BankMuamalat
+            | api_models::enums::BankNames::BankRakyat
+            | api_models::enums::BankNames::BankSimpananNasional
+            | api_models::enums::BankNames::Barclays
+            | api_models::enums::BankNames::BlikPSP
+            | api_models::enums::BankNames::CapitalOne
+            | api_models::enums::BankNames::Chase
+            | api_models::enums::BankNames::Citi
+            | api_models::enums::BankNames::CimbBank
+            | api_models::enums::BankNames::Discover
+            | api_models::enums::BankNames::NavyFederalCreditUnion
+            | api_models::enums::BankNames::PentagonFederalCreditUnion
+            | api_models::enums::BankNames::SynchronyBank
+            | api_models::enums::BankNames::WellsFargo
+            | api_models::enums::BankNames::Handelsbanken
+            | api_models::enums::BankNames::HongLeongBank
+            | api_models::enums::BankNames::HsbcBank
+            | api_models::enums::BankNames::KuwaitFinanceHouse
+            | api_models::enums::BankNames::Regiobank
+            | api_models::enums::BankNames::Revolut
+            | api_models::enums::BankNames::ArzteUndApothekerBank
+            | api_models::enums::BankNames::AustrianAnadiBankAg
+            | api_models::enums::BankNames::BankAustria
+            | api_models::enums::BankNames::Bank99Ag
+            | api_models::enums::BankNames::BankhausCarlSpangler
+            | api_models::enums::BankNames::BankhausSchelhammerUndSchatteraAg
+            | api_models::enums::BankNames::BankMillennium
+            | api_models::enums::BankNames::BankPEKAOSA
+            | api_models::enums::BankNames::BawagPskAg
+            | api_models::enums::BankNames::BksBankAg
+            | api_models::enums::BankNames::BrullKallmusBankAg
+            | api_models::enums::BankNames::BtvVierLanderBank
+            | api_models::enums::BankNames::CapitalBankGraweGruppeAg
+            | api_models::enums::BankNames::CeskaSporitelna
+            | api_models::enums::BankNames::Dolomitenbank
+            | api_models::enums::BankNames::EasybankAg
+            | api_models::enums::BankNames::EPlatbyVUB
+            | api_models::enums::BankNames::ErsteBankUndSparkassen
+            | api_models::enums::BankNames::FrieslandBank
+            | api_models::enums::BankNames::HypoAlpeadriabankInternationalAg
+            | api_models::enums::BankNames::HypoNoeLbFurNiederosterreichUWien
+            | api_models::enums::BankNames::HypoOberosterreichSalzburgSteiermark
+            | api_models::enums::BankNames::HypoTirolBankAg
+            | api_models::enums::BankNames::HypoVorarlbergBankAg
+            | api_models::enums::BankNames::HypoBankBurgenlandAktiengesellschaft
+            | api_models::enums::BankNames::KomercniBanka
+            | api_models::enums::BankNames::MBank
+            | api_models::enums::BankNames::MarchfelderBank
+            | api_models::enums::BankNames::Maybank
+            | api_models::enums::BankNames::OberbankAg
+            | api_models::enums::BankNames::OsterreichischeArzteUndApothekerbank
+            | api_models::enums::BankNames::OcbcBank
+            | api_models::enums::BankNames::PayWithING
+            | api_models::enums::BankNames::PlaceZIPKO
+            | api_models::enums::BankNames::PlatnoscOnlineKartaPlatnicza
+            | api_models::enums::BankNames::PosojilnicaBankEGen
+            | api_models::enums::BankNames::PostovaBanka
+            | api_models::enums::BankNames::PublicBank
+            | api_models::enums::BankNames::RaiffeisenBankengruppeOsterreich
+            | api_models::enums::BankNames::RhbBank
+            | api_models::enums::BankNames::SchelhammerCapitalBankAg
+            | api_models::enums::BankNames::StandardCharteredBank
+            | api_models::enums::BankNames::SchoellerbankAg
+            | api_models::enums::BankNames::SpardaBankWien
+            | api_models::enums::BankNames::SporoPay
+            | api_models::enums::BankNames::SantanderPrzelew24
+            | api_models::enums::BankNames::TatraPay
+            | api_models::enums::BankNames::Viamo
+            | api_models::enums::BankNames::VolksbankGruppe
+            | api_models::enums::BankNames::VolkskreditbankAg
+            | api_models::enums::BankNames::VrBankBraunau
+            | api_models::enums::BankNames::UobBank
+            | api_models::enums::BankNames::PayWithAliorBank
+            | api_models::enums::BankNames::BankiSpoldzielcze
+            | api_models::enums::BankNames::PayWithInteligo
+            | api_models::enums::BankNames::BNPParibasPoland
+            | api_models::enums::BankNames::BankNowySA
+            | api_models::enums::BankNames::CreditAgricole
+            | api_models::enums::BankNames::PayWithBOS
+            | api_models::enums::BankNames::PayWithCitiHandlowy
+            | api_models::enums::BankNames::PayWithPlusBank
+            | api_models::enums::BankNames::ToyotaBank
+            | api_models::enums::BankNames::VeloBank
+            | api_models::enums::BankNames::ETransferPocztowy24
+            | api_models::enums::BankNames::PlusBank
+            | api_models::enums::BankNames::EtransferPocztowy24
+            | api_models::enums::BankNames::BankiSpbdzielcze
+            | api_models::enums::BankNames::BankNowyBfgSa
+            | api_models::enums::BankNames::GetinBank
+            | api_models::enums::BankNames::Blik
+            | api_models::enums::BankNames::NoblePay
+            | api_models::enums::BankNames::IdeaBank
+            | api_models::enums::BankNames::EnveloBank
+            | api_models::enums::BankNames::NestPrzelew
+            | api_models::enums::BankNames::MbankMtransfer
+            | api_models::enums::BankNames::Inteligo
+            | api_models::enums::BankNames::PbacZIpko
+            | api_models::enums::BankNames::BnpParibas
+            | api_models::enums::BankNames::BankPekaoSa
+            | api_models::enums::BankNames::VolkswagenBank
+            | api_models::enums::BankNames::AliorBank
+            | api_models::enums::BankNames::Boz
+            | api_models::enums::BankNames::BangkokBank
+            | api_models::enums::BankNames::KrungsriBank
+            | api_models::enums::BankNames::KrungThaiBank
+            | api_models::enums::BankNames::TheSiamCommercialBank
+            | api_models::enums::BankNames::KasikornBank
+            | api_models::enums::BankNames::OpenBankSuccess
+            | api_models::enums::BankNames::OpenBankFailure
+            | api_models::enums::BankNames::OpenBankCancelled
+            | api_models::enums::BankNames::Aib
+            | api_models::enums::BankNames::BankOfScotland
+            | api_models::enums::BankNames::DanskeBank
+            | api_models::enums::BankNames::FirstDirect
+            | api_models::enums::BankNames::FirstTrust
+            | api_models::enums::BankNames::Halifax
+            | api_models::enums::BankNames::Lloyds
+            | api_models::enums::BankNames::Monzo
+            | api_models::enums::BankNames::NatWest
+            | api_models::enums::BankNames::NationwideBank
+            | api_models::enums::BankNames::RoyalBankOfScotland
+            | api_models::enums::BankNames::Starling
+            | api_models::enums::BankNames::TsbBank
+            | api_models::enums::BankNames::TescoBank
+            | api_models::enums::BankNames::UlsterBank => {
+                Err(errors::ConnectorError::NotSupported {
+                    message: bank.to_string(),
+                    connector: "Nuvei",
+                }
+                .into())
             }
-            .into()),
         }
     }
 }