update example for mgx

add intent detect action and mgx role

examples/mgx/__init__.py

@@ -0,0 +1,3 @@
+# -*- coding: utf-8 -*-
+# @Author  : stellahong (stellahong@fuzhi.ai)
+# @Desc    :

examples/mgx/run_mgx.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+# @Author  : stellahong (stellahong@fuzhi.ai)
+# @Desc    :
+import asyncio
+
+from metagpt.roles.di.mgx import MGX
+
+requirement = (
+    "design a game using Gym (an open source Python library), including a graphical interface and interactive gameplay"
+)
+
+
+async def main(requirement: str = ""):
+    mgx = MGX(ususe_intent=True)
+    await mgx.run(requirement)
+
+
+if __name__ == "__main__":
+    asyncio.run(main(requirement))