feat(events): add extracted fields based on req/res types

[lsampras]

Type of Change

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

Description

• Add a trait to allow adding top level fields & types for each request
• these fields are now collected from either the response or request in order
• This are exposed as top level fields allowing to query over multiple types of api events with a single tag

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 will allow us to query multiple events with a single filter allowing some type of tag based searches
for e.g you can filter all the payment related api calls with a single payment id filter

How did you test it?

• Make a payment create api call & check logs

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

[NishantJoshi00]

Other than that, looks good!

[lsampras]

force-merging as conditions met