Language Server Support

I wanted to see if there is any chance on movement to include an LSP for node within the SDK? We've increasingly been doing that in the other SDK extensions with great success as it significantly reduces the friction to get new developers setup within IDEs (to basically a no-op).

Coincidentally, I'm going to stop bundling fallback LSPs as part of GNOME Builder and so it will be either up to projects to bundle LSP in their node configurations, or we can make it turn-key if we have it in the SDK extension.