extension: Add ability to install local extension from tar.gz file

[ZegWe]

Summary:

• Add a feature to install extension from *.tar.gz files.

Release Notes:

• Add an Install Local Extension button and an action zed::install local extension.

Screenshots:

[maxdeviant]

Thank you for the PR.

While installing local extensions from an archive is something that we'd like to support, the approach here isn't quite right.

Also, note that it is currently possible to install extensions locally by extracting the archive into the extensions directory and then running zed: reload extensions.

[ZegWe]

Thanks for your reply.

Also, note that it is currently possible to install extensions locally by extracting the archive into the extensions directory and then running zed: reload extensions.

But extensions installed by this would not show in the extension panel

While installing local extensions from an archive is something that we'd like to support, the approach here isn't quite right.

I know the way to check an local extension is quite naive here, I'm not sure if it should be stored in ExtensionManifest and saved in the index.json file in extension directory, maybe we can change this to a draft pr and optimize it?

If there's any other ideas, please let me know. I'm glad to hear and contribute to zed.