Continued scaffolding and interface definitions

services/data_service/internal/node/processor/processor.go

@@ -1,2 +1,18 @@
 // Package processor
 package processor
+
+import (
+	"context"
+
+	"gitlab.michelsen.id/phillmichelsen/tessera/services/data_service/internal/node"
+)
+
+type Processor interface {
+	Start(ctx context.Context, cfg string, io IO) error
+	Stop()
+}
+
+type IO interface {
+	node.Receiver
+	node.Sender
+}