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

[dselman]

I like this but:

1. Is the validator a separate concern to the compilation output caching? It looks like it should be its own PR?
2. I want to reimplement the compiler using the code I have in a draft PR removing the two slash dependency. Let me complete that work first then you can add caching on top.

[Nabihamasroor]

@dselman Thanks for the feedback! I'll wait for your refactor to be completed first. Let me know when I should rebase this PR.