feat(connector): Added integrity check #9221

[sohamm20]

Fixes #9223

Type of Change

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

Description

Added integrity checks to Silverflow connector for all payment and refund flows (Authorize, PSync, Refund, RSync). This validates amount and currency consistency between requests and responses to prevent financial discrepancies and detect data corruption.

Additional Changes

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

Motivation and Context

How did you test it?

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

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Changed Files

File	Status
crates/hyperswitch_connectors/src/connectors/square.rs	13% smaller
crates/hyperswitch_connectors/src/connectors/square/transformers.rs	12% smaller
crates/hyperswitch_connectors/src/connectors/silverflow.rs	11% smaller