RC-4: create firebaseService

src/app/services/firebaseService.js

@@ -0,0 +1,15 @@
+import { initializeApp } from 'firebase/app';
+import { getAuth } from 'firebase/auth';
+import { getDatabase } from 'firebase/database';
+import { getStorage } from 'firebase/storage';
+
+export default class FirebaseService {
+  #app;
+
+  constructor(config) {
+    this.app = initializeApp(config);
+    this.auth = getAuth(this.app);
+    this.db = getDatabase(this.app);
+    this.storage = getStorage(this.app);
+  }
+}