Add workflow to run ai detection action within repo

[omkar-foss]

Closes #14.

This PR adds a gh workflow to run our AI detection action locally within repo.

Also please note, while looking into this I found a permissions concern, have created a separate issue #40 for it.

[omkar-foss]

New workflow is running the AI detection action as expected, but the action fails as it's unable to get the head commit here. Will need to look into this.

[omkar-foss]

Convert this to draft until I fix the failing check.

[omkar-foss]

Convert this to draft until I fix the failing check.

AI detection action is working fine within repo 🎉

I've resolved the failing check here, also rebased with main. PR is ready for review, thanks

[omkar-foss]

I added a test commit to check if the AI detection action detects the AI disclosure in it and moves to setting the label and it's working as expected ✅

It detects the ChatGPT ai disclosure in my test commit and moves to setting the ai-detected label here.

Currently it detects the disclosure as a tool mention and not as an assisted-by. This will get resolved separately in #33.

Note: Label setting fails (as expected) since write permissions to set a label aren't given in this PR. We can make this configurable in #40. I'll look into it in a separate PR.

[omkar-foss]

Test commit removed, PR ready for review. Thanks

[MoralCode]

Yolo