Issue:
[REFACTOR] provide an identifier for the api key in the expiry reminder email

### Issue Description:

Currently, our system sends out reminder emails to merchants when their API key is about to expire. However, since merchants can create multiple API keys, the email lacks clarity on which specific API key is expiring.

### Proposed Solution:

Refactor the api key expiry reminder workflow to include the name and prefix of the expiring API key in email. This will help merchants easily identify which API key requires attention without confusion.

### Details:

Update the email template to include the following information:
API Key Name along with Prefix in below format -
`API_KEY_NAME [PREFIX]`

### Reference:
Check `ApiKeyExpiryTrackingData` type in https://github.com/juspay/hyperswitch/blob/2c95dcd19778726f476b219271dc42da182088af/crates/diesel_models/src/api_keys.rs 



Resolution:
<think>
PR Context:
- Title: refactor(api_keys): provide identifier for api key in the expiry reminder email
- Merged: 2024-03-04T14:19:34Z
- Files changed: 5 files
- Commits: 4 commits

Implementation approach:
## 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 -->
Refactored the api key expiry reminder workflow to include the name and prefix of the expiring API key in the email

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** refactor(api_keys): provide identifier for api key in the expiry reminder email (#3888)
Co-authored-
Files to modify:


**crates/diesel_models/src/api_keys.rs**
  Modify existing code

**crates/router/src/core/api_keys.rs**
  Modify existing code

**crates/router/src/services/email/types.rs**
  Modify existing code

**crates/router/src/workflows/api_key_expiry.rs**
  Modify existing code