Allow to provide an addtional list of directories used to resolve import
directive. The list of directories is added after the proto file
directory. This enables a scenario when dependencies in the proto file
directory hide those somewhere else.
The code doesn't do validation whether the additional proto_path directories exist. I don't know if protoc is sensitive to it or not. Please let me know if that's not ok and I'll add that functionality.
Allow to provide an addtional list of directories used to resolve import directive. The list of directories is added after the proto file directory. This enables a scenario when dependencies in the proto file directory hide those somewhere else.