Rewrite Prometheus metrics

[No767]

Summary

This PR focuses on completely rewriting the Prometheus metrics to collect data in an more stable and improved method. The collectors are now split up, making it easier to debug and manage. In addition, an new metric, discord_commands_count, which has an label to count each individual command, is added. This makes it much easier to find what commands are used the most and to make an informed decision on it.

This PR breaks the entire Grafana dashboard associated with these metrics

Types of changes

What types of changes does your code introduce to Catherine-Chan
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (Updates to README.md, the documentation, etc)
• Other (if none of the other choices apply)

Checklist

Put an x in the boxes that apply

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes. (if appropriate)
• All workflows (except pre-commit.ci) pass with my new changes
• This PR does not address a duplicate issue or PR

[sonarcloud]

Quality Gate passed

Issues
0 New issues
2 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud