Add dummy streaming methods

Signed-off-by: Nikolai Rodionov <allanger@badhouseplants.net>

proto/test/v1/test_v1.proto

@@ -1,5 +1,6 @@
 syntax = "proto3";
 package test.v1;
+import "google/protobuf/empty.proto";
 option go_package = "gitea.badhouseplants.net/softplayer/softplayer-go-proto/pkg/test/v1";
 
 /**
@@ -7,10 +8,12 @@ option go_package = "gitea.badhouseplants.net/softplayer/softplayer-go-proto/pkg
  */
 service PublicTestService {
   rpc Ping (PingRequest) returns (PingResponse) {}
+  rpc PingStream (google.protobuf.Empty) returns (stream PingStreamResponse) {}
 }
 
 service TestService {
   rpc Pong (PongRequest) returns (PongResponse) {}
+  rpc PongStream (google.protobuf.Empty) returns (stream PongStreamResponse) {}
 }
 
 message PingRequest {}
@@ -20,3 +23,10 @@ message PingResponse {}
 message PongRequest {}
 
 message PongResponse {}
+
+message PingStreamResponse {
+  string dummy = 1;
+}
+message PongStreamResponse {
+  string dummy = 1;
+}