Add new language server capabilities

[niontrix]

Hi folks,
there was a new Nimlangserver release recently, which adds some Nim specific capabilities (e.g. macroExpand) that obviously are not part of the default language server protocol. My question now is: How can I make use of those? Do I need to create an lsp-mode plugin?
I hope someone can give me a hint. Maybe I have overlooked something in the documentation?!

Anyway,..
Thanks for making such a useful Emacs package and keep up the great work!

KR

[jcs090218]

IMO, it depends on the scale of the package. If the scale is small, you can simply contribute to this repo, see the clients folder (see #4283 for reference). If you are planning to support more (medium to large scale), I prefer you create a separate package for this (lsp-dart, lsp-java, etc).

[niontrix]

Currently the deviation from the default LSP are small, as far as I can tell, but I also don't know how much difference there will be in the future.

[jcs090218]

I prefer start in a separate package, then move into lsp-mode if needed. Like lsp-powershell was started as a separated package, but moved into core after a while. Here are some considerations to ponder:

1. You don't have full control in this repo, development can be slow since you will need someone to review your PRs
2. From the user perspective, splitting up a package may be unwelcome experiences. But move into the core don't.

Hope the information helps! :)

[yyoncho]

@niontrix I used to work on nimlangserver and I have this: yyoncho@b9ad057 . Not sure if it still works but you can use it as a base.