feat(connectors): Add integrity check for PhonePe connector

[Rxbber-dxcky]

Type of Change

• [ ] Bugfix
• [x] New feature
• [ ] Enhancement
• [ ] Refactoring
• [ ] Dependency updates
• [ ] Documentation
• [ ] CI/CD

Description

• Added integrity checks for PhonePe connector responses
• Implemented amount validation in authorize, refund, and sync flows
• Added amount and currency fields to PhonepePaymentsResponse struct in phonepe/transformers.rs
• Updated response handling to validate amounts against request
• Fixes #9213

Additional Changes

• [ ] This PR modifies the API contract
• [ ] This PR modifies the database schema
• [ ] This PR modifies application configuration/environment variables

Motivation and Context

• Implements integrity checks for PhonePe connector as per issue #9213
• Ensures response amounts match request amounts to prevent payment discrepancies

How did you test it?

pending

Checklist

• [x] I formatted the code cargo +nightly fmt --all
• [x] I addressed lints thrown by cargo clippy
• [x] I reviewed the submitted code
• [x] I added unit tests for my changes where possible

[semanticdiff-com[bot]]

Review changes with  

Changed Files

File	Status
crates/hyperswitch_connectors/src/connectors/phonepe/transformers.rs	63% smaller
crates/hyperswitch_connectors/src/connectors/phonepe.rs	0% smaller

[Rxbber-dxcky]

@bsayak03, can you check on this PR and I am unable to build or test using cargo.

[Rxbber-dxcky]

@bsayak03, can i get a response on what to do ?

[bsayak03]

@bsayak03, can i get a response on what to do ?

Currently in review. Will update you soon @Rxbber-dxcky

[Rxbber-dxcky]

Thank you for your response, @bsayak03