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/credentials/utils.py

@@ -0,0 +1,10 @@
+import os
+
+
+def create_environment_dict(overrides):
+    """
+    Create and return a copy of os.environ with the specified overrides
+    """
+    result = os.environ.copy()
+    result.update(overrides or {})
+    return result