Update docs/index.rst; add gapic_version.py

docs/index.rst

@@ -24,6 +24,8 @@ API Reference
     bigquery_storage_v1beta2/library
     bigquery_storage_v1beta2/services_
     bigquery_storage_v1beta2/types_
+    bigquery_storage_v1alpha/services_
+    bigquery_storage_v1alpha/types_
 
 
 Migration Guide

google/cloud/bigquery_storage_v1alpha/gapic_version.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+__version__ = "2.25.0"  # {x-release-please-version}