[FEATURE] Copy as markdown and Ask in ChatGPT dropdown

[ricochet]

@lachieh brought this up and I think it'd be nice to have on our docs. Loading a doc page as context for solving a problem is becoming more and more important to developer workflows. Many sites have started adopting a copy drop-down selector for either copying the md text and/or opening the doc page with ChatGPT/Claude.

While I didn't find a plugin for docusaurus that already does this, I did find a feature request asking for it: https://docusaurus.io/feature-requests/p/integration-with-ai-llms-mcp