feat: add rate limiting with Bucket4j per endpoint tier - #8
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feat: add rate limiting
Changes
RateLimitTier— defines limits per endpoint (IP_LOOKUP: 30/min, GEO_SEARCH: 60/min)RateLimit— custom annotation to declare tier per controller methodRateLimitService— resolves bucket per client (X-Forwarded-For + IP fallback)RateLimitInterceptor— intercepts requests and enforces limitsWebConfig— registers interceptor for /api/v1/geo/**Response Headers
X-RateLimit-Limit— max requests allowedX-RateLimit-Remaining— requests remainingRetry-After— seconds until reset (on 429)Testing