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

gcloud auth application-default login/google-cloud-sdk/lib/surface/recaptcha/keys/list.yaml

@@ -0,0 +1,27 @@
+- release_tracks: [ALPHA, GA]
+
+  help_text:
+    brief: List reCAPTCHA Keys.
+    description: List all of the reCAPTCHA Keys that exist in a given project.
+    examples: |
+        To list all the reCAPTCHA keys existing for your project, run:
+
+          $ {command}
+
+  request:
+    collection: recaptchaenterprise.projects.keys
+
+  response:
+    id_field: name
+
+  arguments:
+    resource:
+      help_text: The project name where to list the indexes.
+      spec: !REF googlecloudsdk.command_lib.recaptcha.resources:project
+
+  output:
+    format: |
+      table(
+      name.basename():label=SITE_KEY,
+        display_name
+      )