elixir support

[ravaq]

hi!
please add linter for elixir.
thanks a lot.

[PerilousBooklet]

From my understanding of this, credo is dependent on single projects, so to enable support it would be necessary to make a custom module for the project template manager plugin that installs and configures the linter for every project.

[PerilousBooklet]

And then add support to lintplus.

[PerilousBooklet]

Update: I made a PR to lite-xl-lsp to add support for elixir intellisense.
To enable elixir diagnostics, you have to use credo.
Add this {:credo, "~> 1.7", only: [:dev, :test], runtime: false} to your mix.exs.
Then run mix deps.get and mix credo inside your elixir project folder.