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

gcloud auth application-default login/google-cloud-sdk/lib/surface/deploy/rollouts/list.yaml

@@ -0,0 +1,23 @@
+- release_tracks: [ALPHA, BETA, GA]
+
+  help_text:
+    brief: List the rollouts.
+    description: |
+      List the rollouts for a specified delivery pipeline.
+    examples: |
+      To list the rollouts for delivery pipeline 'test-pipeline' and release 'test-release' in region 'us-central1', run:
+
+        $ {command} --delivery-pipeline=test-pipeline --release=test-release --region=us-central1
+
+  request:
+    collection: clouddeploy.projects.locations.deliveryPipelines.releases.rollouts
+    api_version: v1
+
+  response:
+    id_field: name
+
+  arguments:
+    resource:
+      help_text: The release for which you want to list the rollouts.
+      spec: !REF googlecloudsdk.command_lib.deploy.resources:release
+      is_positional: false