re-organize nixvim

programs/nixvim/_plugins/treesitter.nix

@@ -1,69 +0,0 @@
-{ pkgs, ... }:
-
-{
-  programs.nixvim.plugins = {
-    treesitter = {
-      enable = true;
-
-      grammarPackages = with pkgs.vimPlugins.nvim-treesitter.builtGrammars; [
-        awk
-        bash
-        c
-        cpp
-        css
-        dockerfile
-        fish
-        git-rebase
-        gitattributes
-        gitcommit
-        gitignore
-        go
-        haskell
-        hocon
-        html
-        http
-        java
-        javascript
-        json
-        json5
-        jsonc
-        lua
-        make
-        markdown
-        markdown-inline
-        nix
-        proto
-        python
-        rust
-        scala
-        sql
-        swift
-        terraform
-        toml
-        typescript
-        vim
-        xml
-        yaml
-      ];
-
-      nixvimInjections = true;
-
-      settings = {
-        highlight.enable = true;
-        indent.enable = true;
-      };
-      folding = false;
-    };
-
-    treesitter-refactor = {
-      enable = true;
-      highlightDefinitions = {
-        enable = true;
-        # Set to false if you have an `updatetime` of ~100.
-        clearOnCursorMove = false;
-      };
-    };
-
-    hmts.enable = true;
-  };
-}