add another python test plugin

src/mana_python_plugin_test_debugpy.py

@@ -0,0 +1,21 @@
+import sys
+
+def begin_run(runDescription: str):
+    print(f"python: begin_run - python version: {sys.version}")
+    try:
+        import debugpy
+        debugpy.listen(5678)
+        print("python: debugpy listening on :5678")
+    except Exception as e:
+        print(f"python: could not start debugpy: {e}")
+
+def end_run(runDescription: str):
+    print(f"python: end_run")
+
+def process_event(eventIndex: int, dataArrays):
+    return
+    print(f"event[{eventIndex}]: {dataArrays}")
+
+def process_system_event(data):
+    return
+    print(f"python: system_event: size={len(data)}")