feat: improved metrics collection and rpc logging

[seanmcgary]

Description

• Improved logging between grpc and http requests to better normalize logged fields
• Emit metrics for rpc request handling in a uniform way so that you dont have to rely on parsing logs to extract data
• Emit metrics to track block processing duration and rewards calculation duration

Fixes # (issue)

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Updated all unit tests. Observed RPC logs when running the rpc server locally for correct formatting.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings