Add RateLimiter feature for resilient module (#212)

[Mamedov14]

Closes #212

Implements @RateLimit annotation and RateLimiter interface for the resilient module.

What's included:

• RateLimiter interface with tryAcquire(), acquire(), and execute() helpers
• Lock-free fixed-window counter implementation via AtomicLong CAS (no external libraries)
• Config support: limitForPeriod + limitRefreshPeriod with default fallback
• Java annotation processor (resilient-annotation-processor) — supports sync and Future/CompletionStage
• Kotlin symbol processor (resilient-symbol-processor) — supports sync and Flow
• Tests for both Java and Kotlin