This PR updates the docs for LangSmith Platform, folding in LGP.
Specifically:
- Update to tab arrangement.
- Big content changes in Deployments tab (now Agent deployment as well
as Platform infrastructure deployment).
- Changing the name of the Studio feature.
- Overhaul of home page.
- Updates to tab landing pages to follow the same card format
consistently.
- Moving LGP content into the LS directory in the docs.
## Latest preview:
https://langchain-5e9cc07a-preview-langsm-1760109143-df9b7ef.mintlify.app/langsmith/home
Kathryn May