feat: podpora per-user notifikací s Discord, ntfy a Teams (#39)

Uživatelé mohou v nastavení konfigurovat vlastní webhook URL/topic
pro Discord, MS Teams a ntfy, a zvolit události k odběru.
Notifikace jsou odesílány pouze uživatelům se stejnou zvolenou lokalitou.

server/src/index.ts

@@ -13,6 +13,7 @@ import foodRoutes, { refreshMetoda } from "./routes/foodRoutes";
 import votingRoutes from "./routes/votingRoutes";
 import easterEggRoutes from "./routes/easterEggRoutes";
 import statsRoutes from "./routes/statsRoutes";
+import notificationRoutes from "./routes/notificationRoutes";
 
 const ENVIRONMENT = process.env.NODE_ENV ?? 'production';
 dotenv.config({ path: path.resolve(__dirname, `../.env.${ENVIRONMENT}`) });
@@ -146,6 +147,7 @@ app.use("/api/food", foodRoutes);
 app.use("/api/voting", votingRoutes);
 app.use("/api/easterEggs", easterEggRoutes);
 app.use("/api/stats", statsRoutes);
+app.use("/api/notifications", notificationRoutes);
 
 app.use('/stats', express.static('public'));
 app.use(express.static('public'));