Create community directory

[derobins]

• Adds a community directory
• Adds the MAFISC and SZ filters to the community directory
• Adds a README

[lrknox]

The failing link in the "Check for recent commits" workflow, "https://docs.github.com/rest/commits/commits#list-commits", gets redirected to https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28#list-commits when I copy it and paste it in a browser. Not sure why it fails in the check, nor what needs to be done.

[derobins]

This change shouldn't affect the CI at all since the two plugins are broken and untested