Issue:
refactor(payment_methods): Fix db insert for payment method create

## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [x] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
Currently, payment method create API does not insert payment method record in the Db. 
have added the db call to insert the record if not already present.


### 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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1. `config`
2. `crates/router/src/configs`
3. `loadtest/config`
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## Motivation and Context
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Why is this change required? What problem does it solve?
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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<img width="1512" alt="image" src="https://github.com/juspay/hyperswitch/assets/76486416/29b8d829-367f-4a6a-a84b-4a4e3b35fd6b">

<img width="1495" alt="image" src="https://github.com/juspay/hyperswitch/assets/76486416/ff9e8311-eef7-4beb-9813-60534b216b60">

<img width="1507" alt="image" src="https://github.com/juspay/hyperswitch/assets/76486416/70e42034-66b5-4a00-a703-7fafc8653cdf">




## Checklist
<!-- Put an `x` in the boxes that apply -->

- [x] I formatted the code `cargo +nightly fmt --all`
- [x] I addressed lints thrown by `cargo clippy`
- [x] I reviewed submitted code
- [ ] I added unit tests for my changes where possible
- [ ] I added a [CHANGELOG](/CHANGELOG.md) entry if applicable


Resolution:
<think>
PR Context:
- Title: fix(core): Address 500 when deleting payment method and add logs to postman collections
- Merged: 2023-07-24T12:50:55Z
- Files changed: 9 files
- Commits: 19 commits

Implementation approach:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [x] Bugfix

## Description
<!-- Describe your changes in detail -->
- When a payment is done through saved card flow, the details is stored in Vault. To delete this, we need to pass `payment_method_id`. Since the `payment_method_id` is **not** exposed, it is impossible to delete the payment data
- When a `PaymentMethod` is created without doing a payment, it is stored in the database (`payment_methods` table) and not in the
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** fix(core): Address 500 when deleting payment method and add logs to postman collections (#1695)
Co-a
Files to modify:


**crates/router/src/core/payment_methods/cards.rs**
  Modify existing code