micropython: add micropython component

components/language/micropython/tests/basics/async_def.py

@@ -0,0 +1,16 @@
+# test async def
+
+def dec(f):
+    print('decorator')
+    return f
+
+# test definition with a decorator
+@dec
+async def foo():
+    print('foo')
+
+coro = foo()
+try:
+    coro.send(None)
+except StopIteration:
+    print('StopIteration')