Add caching template for gowrap

[retr0-kernel]

Add Caching Template for GoWrap

This PR adds a new caching template that automatically instruments Go interfaces with in-memory caching.

Features

• Smart Caching: Only caches methods with return values
• Error Handling: Errors are never cached, failed calls always hit the underlying implementation
• Thread-Safe: Uses sync.RWMutex for concurrent access
• Configurable: Customizable cache expiration and cleanup intervals
• Multi-Return Support: Handles both single and multiple return value methods
• Key Generation: Cache keys based on method name + all parameters

Usage

# Basic usage
gowrap gen -p io -i Reader -t caching -o reader_with_caching.go

# With custom decorator name
gowrap gen -p io -i Writer -t caching -v DecoratorName=CachedWriter -o writer_with_caching.go

[retr0-kernel]

Hey there @hexdigest ,
Added a caching template that instruments interfaces with in-memory caching using go-cache. Let me know if any changes needed or anything, will do the needful. Thank you.