Scaffold new system

services/data_service/internal/node/io.go

@@ -0,0 +1,14 @@
+// Package node
+package node
+
+import (
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/domain"
+)
+
+type In interface {
+	Receive() (port string, message domain.Message, ok bool)
+}
+
+type Out interface {
+	Send(port string, message domain.Message) error
+}