AI-assisted DART docs and Q&A

[jslee02]

Hi all - DART has experimental AI-assisted docs for quick API, build, and codebase questions:

• DeepWiki: https://deepwiki.com/dartsim/dart
• NotebookLM: https://notebooklm.google.com/notebook/c0cfc8ce-17ae-415a-a615-44c4342f0da6

DeepWiki can be a quick starting point. If the answer is unclear, outdated, or you want maintainer/community input, please ask in Q&A Discussions: https://github.com/dartsim/dart/discussions/categories/q-a

These tools are experimental; the source code, official docs, and maintainer answers remain the source of truth:

• English: https://dart.readthedocs.io/
• 한국어: https://dart-ko.readthedocs.io/

Feedback on gaps is welcome here.