feat(events): add type info to outgoing requests & maintain structural & PII type info

[lsampras]

Type of Change

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

Description

• Currently we rely on the send_request function and the Request object to send outgoing api calls
• This internally relies on assuming that the caller has passed a correct content type & correctly serialized the json payload
• Instead we now accept a generic request that implements serialize + maskedSerialize s.t we can use it to send requests + log the masked bodies for such requests

Additional Changes

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

Motivation and Context

• This allows us to be more robust about our request body types and avoid mismatch's
• The masking capability also allows us to now log the raw request as needed

Future enhancements

• we can also require the bodies to implement debug fmt for quick logging
• we can also extract metadata from the request bodies such as payment_id/refund_id/flow type via common traits

How did you test it?

• make payment calls with confirm=true
• the underlying connector call would be logged with the following info

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 added a CHANGELOG entry if applicable

[ThisIsMani]

Reviewed dashboard specific changes.