refactor: use http framework for features

[turip]

Overview

Rewrite existing implementation to work better with our http_framework, allowing better reuse of the handlers.

Notes for reviewer

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my 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