Create dangling commit bot

[argvrutter]

Github Action: Linked Issue checker

Aims to reduce the number of dangling commits by tracking them and notifying students.
This check will run for each commit pushed to main, facilitated by a hook / GitHub action.

Any commits to be counted toward an iteration

• in student repos
• have a linked commmit

Students can link these commits in two ways:

• by including the issue number in the commit message on creation
• by linking via commit hash in a comment in the issue
• revising a commit message to link it to an issue

It should be verified that the commit is linked to a valid issue

To communicate commits that are not properly linked, they could be linked to a "dangling commits issue" or included in a discussion post.

Issues that should be linked should be in

Validates that git commits are linked with an issue

Runs on push hook

[argvrutter]

Furthermore, it should avoid tracking commits that are merge commits or content-free commits.

[robobenklein]

I think every commit would be a lot of spam, but perhaps once a day summary if they had any unlinked it would comment on one of those commits mentioning it's not counted towards substantial feature work.