add treesitter

lua/plugins/treesitter.lua

@@ -0,0 +1,49 @@
+local Plugin = { "nvim-treesitter/nvim-treesitter" }
+Plugin.dependencies = {
+  { "nvim-treesitter/nvim-treesitter-textobjects" },
+}
+
+Plugin.main = "nvim-treesitter.configs"
+
+-- See :help nvim-treesitter-modules
+Plugin.opts = {
+  auto_install = true,
+
+  highlight = {
+    enable = true,
+    additional_vim_regex_highlighting = false,
+  },
+  incremental_selection = {
+    enable = true,
+    module_path = "nvim-treesitter.incremental_selection",
+  },
+  indent = {
+    enable = true,
+    module_path = "nvim-treesitter.indent",
+  },
+
+  sync_install = true,
+  auto_install = true,
+
+  -- :help nvim-treesitter-textobjects-modules
+  textobjects = {
+    select = {
+      enable = true,
+      lookahead = true,
+      keymaps = {
+        ["af"] = "@function.outer",
+        ["if"] = "@function.inner",
+        ["ac"] = "@class.outer",
+        ["ic"] = "@class.inner",
+      },
+    },
+  },
+
+  ensure_installed = {
+    "vim",
+    "vimdoc",
+    "lua",
+  },
+}
+
+return Plugin