feat(connector): [REDSYS] Added Integrity Check support for all Payment & Refund Flows

[kurayami07734]

Type of Change

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

Description

Added integrity check in PSync and RSync flows.

Note

I have only added request integrity check to Authorize and Capture flows, as the response body returned
by Redsys does not contain the amount or currency.

Additional Changes

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

Motivation and Context

Closes #9220

How did you test it?

Note

I was not able to get any Redsys credentials to test the code from my side,
@bsayak03 told me he will test it on his side

Checklist

• 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 was unable to run clippy because my cargo build kept failing

     error: failed to run custom build command for `grpc-api-types v0.1.0 (https://github.com/juspay/connector-service?rev=f719688943adf7bc17bb93dcb43f27485c17a96e#f7196889)`

Caused by:
 process didn't exit successfully: `/home/ghidora/hyperswitch/target/debug/build/grpc-api-types-0414af7d2bbc1720/build-script-build` (exit status: 1)
 --- stderr
 g2h: Incompatible dependency `axum`: expected `0.8.3`, found `0.7.9`
 Error: Custom { kind: Other, error: "protoc failed: payment.proto: This file contains proto3 optional fields, but --experimental_allow_proto3_optional was not set.\n" }

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
crates/common_utils/src/types.rs	98% smaller
crates/hyperswitch_connectors/src/connectors/redsys.rs	5% smaller
crates/hyperswitch_connectors/src/connectors/redsys/transformers.rs	0% smaller

[kurayami07734]

@bsayak03 Let me know once you have tested and reviewed this PR