deploy-ng: Add setup.py to the asteroids sample

samples/asteroids/setup.py

@@ -0,0 +1,8 @@
+from direct.showutil.dist import *
+
+setup(
+    name="asteroids",
+    directories=['.'],
+    exclude_paths=['build', 'setup.py'],
+    applications=[Application('main.py', 'asteroids')],
+)