feat: add BigQuery Storage Write API v1 (#209)

* feat: add BigQuery Storage Write API v1

Committer: @yirutang
PiperOrigin-RevId: 397350004

Source-Link: googleapis/googleapis@b4da4fd

Source-Link: googleapis/googleapis-gen@67bcfcf
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNjdiY2ZjZmEwMGE0MTEzZTk2OGJhYzFhMTBkMGFkMGMxYjdkYzQ1YiJ9

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* fix: fix system tests

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Takashi Matsuo <tmatsuo@google.com>

protos/google/cloud/bigquery/storage/v1/protobuf.proto

@@ -0,0 +1,48 @@
+// Copyright 2021 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.
+
+syntax = "proto3";
+
+package google.cloud.bigquery.storage.v1;
+
+import "google/protobuf/descriptor.proto";
+
+option csharp_namespace = "Google.Cloud.BigQuery.Storage.V1";
+option go_package = "google.golang.org/genproto/googleapis/cloud/bigquery/storage/v1;storage";
+option java_multiple_files = true;
+option java_outer_classname = "ProtoBufProto";
+option java_package = "com.google.cloud.bigquery.storage.v1";
+option php_namespace = "Google\\Cloud\\BigQuery\\Storage\\V1";
+
+// ProtoSchema describes the schema of the serialized protocol buffer data rows.
+message ProtoSchema {
+  // Descriptor for input message.  The provided descriptor must be self
+  // contained, such that data rows sent can be fully decoded using only the
+  // single descriptor.  For data rows that are compositions of multiple
+  // independent messages, this means the descriptor may need to be transformed
+  // to only use nested types:
+  // https://developers.google.com/protocol-buffers/docs/proto#nested
+  //
+  // For additional information for how proto types and values map onto BigQuery
+  // see: https://cloud.google.com/bigquery/docs/write-api#data_type_conversions
+  google.protobuf.DescriptorProto proto_descriptor = 1;
+}
+
+message ProtoRows {
+  // A sequence of rows serialized as a Protocol Buffer.
+  //
+  // See https://developers.google.com/protocol-buffers/docs/overview for more
+  // information on deserializing this field.
+  repeated bytes serialized_rows = 1;
+}