feat: add ntfy integration (#2900)

Co-authored-by: Meier Lukas <meierschlumpf@gmail.com>

packages/integrations/src/interfaces/notifications/notification.ts

@@ -0,0 +1,6 @@
+export interface Notification {
+  id: string;
+  time: Date;
+  title: string;
+  body: string;
+}

packages/integrations/src/interfaces/notifications/notifications-integration.ts

@@ -0,0 +1,6 @@
+import { Integration } from "../../base/integration";
+import type { Notification } from "./notification";
+
+export abstract class NotificationsIntegration extends Integration {
+  public abstract getNotificationsAsync(): Promise<Notification[]>;
+}