combine crossplatform compilation

zhangmeng

2022-06-09 39c30eb5348b640c361cb50c2f02cf27b8bdf783

 protobuf/x86_64/include/google/protobuf/compiler/plugin.proto

copy from protobuf-aarch/include/google/protobuf/compiler/plugin.proto
copy to protobuf/x86_64/include/google/protobuf/compiler/plugin.proto