Add support for R

[seanbirchall]

Hi this is great is there anyway R support could be added for client side workloads.

[mkslanc]

@seanbirchall would language client though language server setup work for you? Do you have ability to launch r language server?

[mkslanc]

Anyway, this new wiki page should help with setup

[seanbirchall]

Let me try it out, thank you @mkslanc! I think this should work.