Feature: User favourites

[happy-devs]

Summary

This requests:

• add favourites endpoints / database entry
• adds env documentation / adminer image for easier inspection of db
• adds basic logging to current methods (starting with favourite)

New Features

• Added two user-specific endpoints, one to favourite / unfavourite a signal and one to fetch all current favourites. Both use the internal authenticate_user dependency to fetch the correct user to save favourites against.

Bug Fixes

No bug fixes.

Checklist

• I have read the contribution guidelines.
• 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 added tests that prove my fix is effective or that my feature works.
• I have added required dependencies to requirements.txt
• I have updated the documentation (if applicable).