chore(librarian): onboard to librarian

.librarian/generator-input/.repo-metadata.json

@@ -0,0 +1,17 @@
+{
+    "name": "pubsublite",
+    "name_pretty": "Pub/Sub Lite",
+    "product_documentation": "https://cloud.google.com/pubsub/lite",
+    "client_documentation": "https://cloud.google.com/python/docs/reference/pubsublite/latest",
+    "issue_tracker": "",
+    "release_level": "stable",
+    "language": "python",
+    "library_type": "GAPIC_COMBO",
+    "repo": "googleapis/python-pubsublite",
+    "distribution_name": "google-cloud-pubsublite",
+    "api_id": "pubsublite.googleapis.com",
+    "default_version": "v1",
+    "codeowner_team": "@googleapis/api-pubsublite",
+    "api_shortname": "pubsublite",
+    "api_description": "is designed to provide reliable,\nmany-to-many, asynchronous messaging between applications. Publisher\napplications can send messages to a topic and other applications can\nsubscribe to that topic to receive the messages. By decoupling senders and\nreceivers, Google Cloud Pub/Sub allows developers to communicate between\nindependently written applications.\n\nCompared to Google Pub/Sub, Pub/Sub Lite provides partitioned zonal data\nstorage with predefined capacity. Both products present a similar API, but\nPub/Sub Lite has more usage caveats.\n\nSee the [Google Pub/Sub Lite docs](https://cloud.google.com/pubsub/quickstart-console#before-you-begin) for more details on how to activate\nPub/Sub Lite for your project, as well as guidance on how to choose between\nCloud Pub/Sub and Pub/Sub Lite."
+}

owlbot.py → .librarian/generator-input/librarian.py

@@ -44,7 +44,6 @@
     s.move(
         [library],
         excludes=[
-            "**/gapic_version.py",  # gapic_version.py will be updated by release please
             "docs/**/*",  # generated GAPIC docs should be ignored
             "scripts/fixup*.py",  # new libraries do not need the keyword fixup script
             "setup.py",
@@ -72,7 +71,8 @@
     templated_files,
     excludes=[
         ".coveragerc",
-        ".github/release-please.yml",
+        ".github/**",
+        ".kokoro/**",
         "docs/multiprocessing.rst",
         "docs/index.rst",
         "README.rst",