feat(nvim): add treesitter bindings for node selection

Using v (enter visual mode) makes more sense than the defaults that
comes with LazyVim

.config/nvim/lua/plugins/extras/editor/treesitter-extended.lua

@@ -0,0 +1,12 @@
+return {
+  "nvim-treesitter/nvim-treesitter",
+  opts = {
+    incremental_selection = {
+      enable = true,
+      keymaps = {
+        node_incremental = "v",
+        node_decremental = "V",
+      },
+    },
+  },
+}