backend: add possibility to download swagger.json

Author: schmolldechse

backend/server.ts

@@ -10,6 +10,7 @@ app.use(express.json());
 app.use(cors({ origin: "*" }));
 
 app.use("/api-docs", swaggerUi.serve, swaggerUi.setup(swaggerDocument));
+app.get("/api-spec", (req, res) => res.download("./build/swagger.json"));
 app.get("/api", (req, res) => res.redirect("/api-docs"));
 
 RegisterRoutes(app);