feat: added event and event handler

server/src/event/ttnMessageReceivedEvent.ts

@@ -0,0 +1,14 @@
+export const TtnMessageReceivedEventName = "TtnMessageReceived";
+export type TtnMessageReceivedEvent = {
+  lp_ttn_end_device_uplinks_id: string;
+  wifis: {
+    mac: string;
+    rssi: number;
+  }[];
+  ttnGateways: {
+    rssi: number;
+    latitude: number;
+    longitude: number;
+    altitude: number;
+  }[];
+};