Make AirStack AI Native with skills and Agents.md

[andrewjong]

Make AirStack AI native to accelerate coding with agents.

[andrewjong]

Actually there's more we can do. E.g. setup the docs with instructions of how to setup and use AI agents. We also want to setup a self-verification loop.

[andrewjong]

will close this for now, will make new issue for enhanced features later