Allow Languages to provide Commands

[sanbox-irl]

Check for existing issues

• Completed

Describe the feature

RA has several commands in VSC like "Go to parent module" or "Go to Cargo.toml". These are really nifty and I'd love to have them in the command palette in zed too.

If applicable, add mockups / screenshots to help present your vision of the feature

No response

[SomeoneToIgnore]

This is a part of the Tasks initiative and is currently being worked on: #7108 (comment)

[sanbox-irl]

Ah they're called TASKS in Zed! Sorry sounds good