[nvim] commit nvim-treesitter configuration

.config/nvim/lua/plugins/treesitter.lua

@@ -0,0 +1,11 @@
+-- https://github.com/nvim-treesitter/nvim-treesitter
+return {
+    "nvim-treesitter/nvim-treesitter",
+    build = ":TSUpdate",
+    config = function()
+        require("nvim-treesitter.configs").setup({
+            ensure_installed = {"julia", "markdown", "lua"},
+            highlight = {enable = true}
+        })
+    end,
+}