Gamify Contributions with a Leaderboard

During a conversation, Rennet suggested a great idea to increase member engagement in our projects: **adding a leaderboard** to gamify the contribution process.

- Use the GitHub service to fetch contributions as a score to rank members.
- To keep things fair, maintainers could be filtered out or placed in a separate category since they typically have higher contribution counts.
- Every time a PR is merged into `main`, we can update and send the leaderboard along with the changelog (possibly a separate issue).
- This would serve as both **a motivator for contributors** and **a way to advertise new features**.