feat: implement vision gateway for palm oil processing service

src/palm-oil/vision.gateway.ts

@@ -170,6 +170,7 @@ export class VisionGateway
       client.emit('response', {
         id: messageID, messageID, serviceId, operation,
         complete: true,
+        message: JSON.stringify({ EOF: true }),
       } satisfies FisAppResponse);
     };
 
@@ -182,6 +183,7 @@ export class VisionGateway
       client.emit('response', {
         id: messageID, messageID, serviceId, operation,
         complete: true,
+        message: JSON.stringify({ EOF: true }),
       } satisfies FisAppResponse);
     };