feat(nix): move Nix configuration to root level

home/neovim/nvim/lua/plugins/treesitter.lua

@@ -0,0 +1,55 @@
+-- Nvim Treesitter configurations
+-- https://github.com/nvim-treesitter/nvim-treesitter
+return {
+  "nvim-treesitter/nvim-treesitter",
+  depencendies = {
+    "nvim-treesitter/playground",
+  },
+  opts = {
+    indent = { enable = false },
+    ensure_installed = {
+      "astro",
+      "bash",
+      "css",
+      "fish",
+      "gitignore",
+      "go",
+      "gomod",
+      "gosum",
+      "gowork",
+      "graphql",
+      "html",
+      "http",
+      "javascript",
+      "json",
+      "lua",
+      "markdown",
+      "markdown_inline",
+      "python",
+      "query",
+      "regex",
+      "scss",
+      "sql",
+      "svelte",
+      "tsx",
+      "typescript",
+      "vim",
+      "vimdoc",
+      "yaml",
+    },
+  },
+  config = function(_, opts)
+    require("nvim-treesitter.configs").setup(opts)
+
+    -- Add custom filetypes
+    vim.filetype.add({
+      extension = {
+        mdx = "mdx",
+        rss = "rss",
+      },
+    })
+
+    vim.treesitter.language.register("markdown", "mdx")
+    vim.treesitter.language.register("xml", "rss")
+  end,
+}