feat: add separate var for peer port

Description

As we are using a real domain in production passing port is no longer option. New env var is created with default val 8001.

Related issues

Testing

Checklist

• I have updated the documentation (if necessary)
• I have added unit tests for new functionality (if applicable)
• My code follows the style guidelines of this project
• I have tested this code on my local machine before submitting this MR

Reviewers

• @alexey.lunin
• @boyan.tsolov

Additional Notes

Closes #23 (closed)

apps/gateway/src/app/app.controller.ts

@@ -26,8 +26,7 @@ export class AppController {
         2,
       )}`,
     );
-
-    this.eventsGateway.sentEvent(dto);
+    this.eventsGateway.server.emit(this.gatewayConfig.socketEventName, dto);
     return "ok";
   }
 }