Allows using the "View history" functionality also on folders and the
project root, and not only on files.

Renamed "View file history" to "View history" in the context menu to
make it consistent.

<img width="1740" height="769" alt="project_history"
src="https://github.com/user-attachments/assets/7f7f8115-6160-44f5-868f-69ac942df8e4"
/>


Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Release Notes:

- Added git history for folders and whole project

---------

Co-authored-by: Anthony Eid <anthony@zed.dev>