Add sql language docs (#32003)

Closes: https://github.com/zed-industries/zed/issues/9537

Pairs with removing `prettier-plugin-sql` from the sql extension:
- https://github.com/zed-extensions/sql/pull/19

Release Notes:

- N/A
01a77bb231Peter Tripp committed on 6/3/2025, 5:52:42 PM· committed by GitHubparentde225fd
2 files changedLine totals unavailable