Develop labeling module (#25)

* refactor: remove db table management from LS adapter (mv to scripts later); change adapter to use the same MySQL DB as other modules.

* refactor: Rename LS Adapter module to datamate-python

runtime/datamate-python/app/infrastructure/__init__.py

@@ -0,0 +1,6 @@
+# app/clients/__init__.py
+
+from .label_studio import Client as LabelStudioClient
+from .datamate import Client as DatamateClient
+
+__all__ = ["LabelStudioClient", "DatamateClient"]