feat: create issue #10 - Rate Limiting

ISSUE-10.md

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+## Issue #10: Implement Rate Limiting
+
+### Description
+
+Implement rate limiting to protect the API from abuse and ensure fair usage among users.
+
+### Acceptance Criteria
+
+- [ ] Configure rate limiting middleware
+- [ ] Define rate limits for different endpoints
+- [ ] Add logging for rate limit violations
+- [ ] Allow configuration of limits via environment variables
+- [ ] Ensure legitimate users are not affected by limits
+
+### Tasks
+
+- [ ] Install and configure express-rate-limit middleware
+- [ ] Define default rate limits
+- [ ] Implement configurable limits via .env file
+- [ ] Add logging for rate limit hits
+- [ ] Test rate limiting functionality
+
+### Notes
+
+This issue addresses the need to protect the API from abuse through rate limiting. The implementation will use express-rate-limit middleware to configure different rate limits for various endpoints, with configuration via environment variables to allow easy adjustment without code changes.