Expose cdk version as airbyte_cdk.__version__ (#37680)

Author: girarda

airbyte-cdk/python/airbyte_cdk/__init__.py

@@ -5,5 +5,7 @@
 from .connector import AirbyteSpec, Connector
 from .entrypoint import AirbyteEntrypoint
 from .logger import AirbyteLogger
+from importlib import metadata
 
 __all__ = ["AirbyteEntrypoint", "AirbyteLogger", "AirbyteSpec", "Connector"]
+__version__ = metadata.version("airbyte_cdk")