[Idea] Community site for unofficial/third-party extensions — ZedHub

[10000DOO]

Many of us have extensions that don't belong in the official registry —
personal forks, opinionated patches, or niche language support that's too
specific to merge upstream. Right now these live scattered on GitHub with
no easy way to discover or install them.

I'm a macOS/iOS developer using Zed as my primary Swift editor. I forked
the official Swift extension to add Objective-C/C++ LSP support and a few
Xcode-specific tweaks — but my PRs were out of scope for the official
extension. I suspect many others are in similar situations.

The idea: ZedHub (working name)
A community site for unofficial Zed extensions, with:

• A catalog linking to repos outside the official registry
• Context on why each extension isn't in the official registry
• Eventually, a CLI to simplify dev extension installation + settings patching

Questions for the team:

• Is using "Zed" in the name (e.g., "ZedHub") okay? Happy to rename if not.
• Any policy concerns around hosting forks of officially registered extensions?
• Is this something Zed would ever want to absorb officially, or is it better
  as a separate community project?

Questions for the community:

• Would you use something like this?
• Do you have extensions you'd want to list there?
• Any prior art I might have missed?

Note: If Zed ever builds official third-party extension support, I'd migrate
to that immediately. This is meant to fill a gap, not compete.