fix(nvim): add treesitter for nix

user/modules/nvim/lua/plugins/lsp.lua

@@ -4,9 +4,42 @@ return {
     ---@class PluginLspOpts
     opts = {
       ---@type lspconfig.options
+      ---@diagnostic disable-next-line: missing-fields
       servers = {
         nil_ls = {},
       },
     },
   },
+  {
+    "nvim-treesitter/nvim-treesitter",
+    ---@type TSConfig
+    ---@diagnostic disable-next-line: missing-fields
+    opts = {
+      ensure_installed = {
+        "bash",
+        "c",
+        "diff",
+        "html",
+        "javascript",
+        "jsdoc",
+        "json",
+        "jsonc",
+        "lua",
+        "luadoc",
+        "luap",
+        "markdown",
+        "markdown_inline",
+        "python",
+        "query",
+        "regex",
+        "toml",
+        "tsx",
+        "typescript",
+        "vim",
+        "vimdoc",
+        "yaml",
+        "nix",
+      },
+    },
+  },
 }