feat: add ntfy integration (#2900)

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

packages/integrations/src/ntfy/ntfy-schema.ts

@@ -0,0 +1,12 @@
+import { z } from "zod";
+
+// There are more properties, see: https://docs.ntfy.sh/subscribe/api/#json-message-format
+// Not all properties are required for this use case.
+export const ntfyNotificationSchema = z.object({
+  id: z.string(),
+  time: z.number(),
+  event: z.string(), // we only care about "message"
+  topic: z.string(),
+  title: z.optional(z.string()),
+  message: z.string(),
+});