introduced the notification-store, which allows to notify the user about new messages

src/stores/notification-store.ts

@@ -0,0 +1,19 @@
+import { defineStore } from 'pinia';
+
+export const useNotificationStore = defineStore('notificationStore',{
+  state:() => ({
+    decision: false,
+    isTabActive: true,
+  }),
+  actions: {
+    saveDecision(decision : boolean) {
+      this.decision = decision;
+    },
+
+    sendNotificationIfAllowed(image : string, headline : string, message : string) {
+      if(this.decision && !this.isTabActive){
+        new Notification(headline, { body: message, icon: image });
+      }
+    }
+  }
+});