Several updates, enable treesitter

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

@@ -0,0 +1,19 @@
+require('nvim-treesitter.configs').setup({
+    ensure_installed = { "python", "go", "julia", "elixir", "rust", "gomod", "json", "lua", "ruby", "yaml" },
+    ignore_install = { "haskell" },
+    highlight = {
+        enable = true
+    },
+    indent = {
+        enable = true
+    },
+    incremental_selection = {
+        enable = true,
+        keymaps = {
+          init_selection = "gnn",
+          node_incremental = "grn",
+          scope_incremental = "grc",
+          node_decremental = "grm",
+        },
+    },
+})