This PR bumps the Haskell extension to v0.1.0.

This version of the Haskell extension brings improved labels for
symbols:

<img width="569" alt="Screenshot 2024-04-10 at 3 38 01 PM"
src="https://github.com/zed-industries/zed/assets/1486634/759fa52f-7b85-4395-abfd-070138201162">

Release Notes:

- N/A