feat: Add new gcloud commands, API clients, and third-party libraries across various services.

gcloud auth application-default login/google-cloud-sdk/lib/third_party/docker/version.py

@@ -0,0 +1,14 @@
+try:
+    from ._version import __version__
+except ImportError:
+    try:
+        # importlib.metadata available in Python 3.8+, the fallback (0.0.0)
+        # is fine because release builds use _version (above) rather than
+        # this code path, so it only impacts developing w/ 3.7
+        from importlib.metadata import version, PackageNotFoundError
+        try:
+            __version__ = version('docker')
+        except PackageNotFoundError:
+            __version__ = '0.0.0'
+    except ImportError:
+        __version__ = '0.0.0'