chore: add license header (#35)

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

go/greptime/v1/database.pb.go

@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// 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.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
@@ -388,7 +402,8 @@ type DeleteRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	// The table name to delete from. Catalog name and schema name are in the `RequestHeader`.
+	// The table name to delete from. Catalog name and schema name are in the
+	// `RequestHeader`.
 	TableName string `protobuf:"bytes,1,opt,name=table_name,json=tableName,proto3" json:"table_name,omitempty"`
 	// The region number of current delete request.
 	RegionNumber uint32 `protobuf:"varint,2,opt,name=region_number,json=regionNumber,proto3" json:"region_number,omitempty"`