feat: integrate rate limiting and enhance security features

- Added @convex-dev/rate-limiter dependency to manage request limits effectively.
- Implemented rate limiting configurations for IPs, users, and endpoints to prevent abuse and enhance security.
- Introduced new security analysis endpoint to detect potential attacks based on incoming requests.
- Updated backend schema to include rate limit configurations and various cyber attack types for improved incident tracking.
- Enhanced existing security functions to incorporate rate limiting checks, ensuring robust protection against brute force and other attacks.

packages/backend/package.json

@@ -23,6 +23,7 @@
   },
   "dependencies": {
     "@convex-dev/better-auth": "^0.9.7",
+    "@convex-dev/rate-limiter": "^0.3.0",
     "@dicebear/avataaars": "^9.2.4",
     "better-auth": "catalog:",
     "convex": "catalog:",