feat: implement luigi config communication settings api

Author: gkrajniak

angular.json

@@ -45,6 +45,7 @@
   "cli": {
     "schematicCollections": [
       "@angular-eslint/schematics"
-    ]
+    ],
+    "analytics": false
   }
 }

src/lib/services/luigi-config/custom-message-listeners.service.ts

@@ -3,11 +3,11 @@ import { Subject } from 'rxjs';
 import { LUIGI_CUSTOM_MESSAGE_LISTENERS_INJECTION_TOKEN } from '../../injection-tokens';
 import { CustomMessageListener } from './custom-message-listener';
 
-interface MessageListener {
+export interface MessageListener {
   (msg: any, mf: any, mfNodes: any): void;
 }
 
-interface MessageListeners {
+export interface MessageListeners {
   customMessagesListeners: Record<string, MessageListener>;
 }