Feature Request: VSCodium support

[matifali]

Discussed in coder/coder#15846

^{Originally posted by asgeirn December 12, 2024}
We're investigating using Coder in an isolated environment with no Internet connectivity, and according to the documentation for offline deployment, VSCode requires outbound port 443 access for the remote SSH extension to work.

I tried installing the Coder VSIX in VSCodium, but it fails because it depends on the ms-vscode-remote.remote-ssh extension. According to VSCodium/vscodium#693 the extension 'jeanp413.open-remote-ssh' does this.

Would it be possible to provide a variant of the Codium extension on Open VSX for this, and a module for creating "Open in VSCodium" links in workspaces?

[matifali]

@code-asher We have now requests for VSCodium, Windsurf and a buggy behavior on Cursor too.
We may need to ship a new separate binary without relying on the MS remote SSh extension as it only works on the MS version of VSCode.

cc: @bpmct