[Feature Request]: Add more GitHub Action related documentation

[rytswd]

🔮 Relevant Command

Other (Please specify in the description)

🗂 Language Type

All

🔎 Request Details

The current GitHub Action related documentation only talks about adding a CI setup.

On top of that, there should be some more documentation and references, such as

• Periodic Importer run and create PR based on the diffs
• Comment based handling to run Importer Update