Does not work with csharp-ls

[j-hui]

@rudiejd I'm opening a new issue to avoid cluttering the old thread.

Original post:

This doesn't work with csharp-ls. I'll see if I can get it working

[j-hui]

That said, it doesn't look like csharp-ls supports progress in the first place. From the TODOs list:

• progress support;

I'm closing this unless there's any indication that this LSP server actually sends progress messages.