Basic support for vscode for web or github.dev

**Is your feature request related to a problem? Please describe.**

I open a project using github.dev (without codespaces[1]), and expect haskell syntax highlight for ".hs" file.

[1] by without codespaces means I could not run a terminal, only typescript could be run in extension.

> The 'Haskell' extension is not available in Visual Studio Code for the Web.

**Describe the solution you'd like**

Install this extension in vscode for web, even there's only partial support (e.g. without lsp, only syntax highlight available)
I'v tried some project of rust/c++, the language server is disabled, while syntax highlight and symbol jump is enabled.

**Additional context**

Press "." on a github project would open it with vscode for web.