Template compilation caching to improve performance

[Nabihamasroor]

Fixes #42

Changes

• Added TemplateValidator class for validating templates before processing
• Implemented caching system using Map to store compiled code and avoid recompilation
• Modified init() and trigger() methods to accept optional compiledTemplate parameter
• Added cache key generation based on template content hash
  -Implemented cache management with invalidateCache() and clearAllCaches() methods
• Updated tests to validate caching behavior and performance improvements

Features

• Separate Compile Step: Compile TypeScript once instead of on every trigger/init call
• Performance Monitoring: Cache hit/miss statistics for optimization tracking