Add deno2 prototype from external repo.

deno2/js/run_node.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+"""
+gn can only run python scripts.
+Also Node programs except to be run with cwd = $root_dir/js so it can resolve
+node_modules.
+"""
+import subprocess
+import sys
+import os
+
+js_path = os.path.dirname(os.path.realpath(__file__))
+os.chdir(js_path)
+args = ["node"] + sys.argv[1:]
+sys.exit(subprocess.call(args))