Publish to Open VSX registry.

[aikawayataro]

From https://github.com/eclipse/openvsx :

Open VSX is a vendor-neutral open-source alternative to the Visual Studio Marketplace. It provides a server application that manages VS Code extensions in a database, a web application similar to the VS Code Marketplace, and a command-line tool for publishing extensions similar to vsce.

This will allow the extension to be available on VsCode-based editors that come with a configuration that enables Open VSX, including the popular VsCodium and the code package from ArchLinux.

[infirms]

Bump here, it would be really cool to see this extension in open-vsx.org library.

[Raildex]

bump. just switched to vscodium and this extension is dearly missed

[swarupsengupta2007]

Would be really helpful. Just started using windsurf, and this extension is dearly missed.

[chriku]

bump. i run code-server in the browser and I miss this extension dearly