Oni: Language server over TCP

[zxiest]

As per https://langserver.org/ , language_server-ruby is very basic where as https://github.com/castwide/solargraph supports more capabilities.

Solargraph, however, only supports TCP; the author is suggesting he was getting more performant results over TCP vs stdio, this is why he kept TCP.
ref: https://github.com/castwide/solargraph/issues/65

The author will take a look at stdio again but it would make sense for Oni to support TCP, especially it might be faster.

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[castwide]

Solargraph gem v0.23.2 includes the first version of the stdio transport. castwide/solargraph#65

[bryphe]

Thanks for logging the issue, @zxiest ! Would love for Oni to support TCP too - I believe that the performance is better (particularly on Windows).

If anyone is up for checking this out, here's where we connect to stdin/stdout today:
https://github.com/onivim/oni/blob/3c6f8d4173c07f259fe5a14c1bb7d71cc888c085/browser/src/Services/Language/LanguageClientProcess.ts#L143

I think it'd just be a matter of adding a configuration for language server registration to pick the transport - and then update the code there to respect that configuration setting.