replace all uses of golang/protobuf/protobuf

[aimuz]

github.com/golang/protobuf has been marked as deprecated, and the dependency seems to be referenced in the current code.

I have noticed a pr that could not be fully replaced due to rules_go, and I was wondering if this work can now continue?

#1358

@johanbrandhorst

I think you should know better, I also found an unfinished business inside the code,thanks you

// AddErrorDefs Adds google.rpc.Status and google.protobuf.Any
// to registry (used for error-related API responses)
func AddErrorDefs(reg *descriptor.Registry) error {
	// load internal protos
	any, _ := legacydescriptor.MessageDescriptorProto(&anypb.Any{})
	any.SourceCodeInfo = new(descriptorpb.SourceCodeInfo)
	status, _ := legacydescriptor.MessageDescriptorProto(&statuspb.Status{})
	status.SourceCodeInfo = new(descriptorpb.SourceCodeInfo)
	// TODO(johanbrandhorst): Use new conversion later when possible
	// any := protodesc.ToFileDescriptorProto((&anypb.Any{}).ProtoReflect().Descriptor().ParentFile())
	// status := protodesc.ToFileDescriptorProto((&statuspb.Status{}).ProtoReflect().Descriptor().ParentFile())
	return reg.Load(&pluginpb.CodeGeneratorRequest{
		ProtoFile: []*descriptorpb.FileDescriptorProto{
			any,
			status,
		},
	})
}

[johanbrandhorst]

Yep it would be great to attempt this again now that most of the ecosystem has moved on.