Log subject and method

[wndhydrnt]

Related issue

#242 @aeneasr

Proposed changes

This change adds the two fields "method" and "subject" as fields to the Logger in the decisions API endpoint as well as the proxy implementation.

Checklist

• I have read the contributing guidelines
• I have read the security policy
• I confirm that this pull request does not address a security vulnerability. If this pull request addresses a security
  vulnerability, I confirm that I got green light (please contact [email protected]) from the maintainers to push the changes.
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation within the code base (if appropriate)
• I have documented my changes in the developer guide (if appropriate)

Further comments

[CLAassistant]

All committers have signed the CLA.

[aeneasr]

Thank you, I'm not super happy with how the subject is being handled because we return it just for logging. Let me see if there's a more beautiful way to solve it :)