This PR adds `label_for_symbol` to the extension API.
As a motivating example, we implemented `label_for_symbol` for the
Haskell extension.
Release Notes:
- N/A
Co-authored-by: Max <max@zed.dev>
4a325614f0Marshall Bowers committed on 4/4/2024, 7:38:38 PM· committed by GitHubparent5d88d9c