feat: rate limit api routes (#336)

* feat: install rate-limiter-flexible and ioredis

* feat: setup redis client

* feat: add withRateLimit wrapper

* feat: wrap trpc endpoint in withRateLimit

* feat: wrap withRateLimit on remaining routes

* feat: exclude webhook route from rate limiting

* chore: update compose files and readme

* refactor: move into api/db packages

apps/web/src/pages/api/auth/[...all].ts

@@ -2,9 +2,17 @@ import { toNodeHandler } from "better-auth/node";
 
 import { initAuth } from "@kan/auth/server";
 import { createDrizzleClient } from "@kan/db/client";
+import { withRateLimit } from "@kan/api/utils/rateLimit";
 
 export const config = { api: { bodyParser: false } };
 
 export const auth = initAuth(createDrizzleClient());
 
-export default toNodeHandler(auth.handler);
+const authHandler = toNodeHandler(auth.handler);
+
+export default withRateLimit(
+  { points: 100, duration: 60 },
+  async (req, res) => {
+    return await authHandler(req, res);
+  },
+);