language/nix: add treesitter queries for nvf idioms

[horriblename]

todo: unsure if the current approach works robustly - our query has the same level of priority as nvim-treesitter in terms of rtp ordering, does this guarantee that ours will be loaded along with nvim-ts's or do we need to prepend ours in rtp?

[github-actions]

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Debug Information

Triggered by: snoweuph

HEAD at: nvf-inject

Reruns: 2647

[snoweuph]

this brings back up the discussion whether we include queries in nvf or not.

If it were me, I would prefer having an API like vim.queries.<name>.injections

examples:

{
    cfg.gotmpl.injection = "html";
    vim.queries.gotmpl.injections = mkSCMInline ''
      ;; extends
      ((text) @injection.content
	      (#set! injection.language "${cfg.gotmpl.injection}")
	      (#set! injection.combined)
      )
    '';
}

{
    cfg.tera.injection = "markdown";
    vim.queries.gotmpl.injections = mkSCMInline ''
      ;; extends
      ((content) @injection.content
	      (#set! injection.language "${cfg.tera.injection}")
	      (#set! injection.combined)
      )
    '';
}

[NotAShelf]

What would be the purpose of mkSCMInline? SCM is just a string in the eyes of Nix, unlike Lua which gets interpolated.

[snoweuph]

What would be the purpose of mkSCMInline? SCM is just a string in the eyes of Nix, unlike Lua which gets interpolated.

was just a thinking. then just make it a string, and when adding it, add lua and scm injections to NVF so I dont have to add lang comments.