feat: Implement title caching system to reduce API calls

- Add configurable title caching with fallback support
- Cache titles for 30 minutes by default, with 24-hour fallback on API failures
- Add --no-cache and --reset-cache CLI flags for cache control
- Implement region-aware caching to handle geo-restricted content
- Use SHA256 hashing for cache keys to handle complex title IDs
- Add cache configuration variables to config system
- Document new caching options in example config

This caching system significantly reduces redundant API calls when debugging
or modifying CLI parameters, improving both performance and reliability.

unshackle/core/config.py

@@ -90,6 +90,10 @@ class Config:
         self.update_check_interval: int = kwargs.get("update_check_interval", 24)
         self.scene_naming: bool = kwargs.get("scene_naming", True)
 
+        self.title_cache_time: int = kwargs.get("title_cache_time", 1800)  # 30 minutes default
+        self.title_cache_max_retention: int = kwargs.get("title_cache_max_retention", 86400)  # 24 hours default
+        self.title_cache_enabled: bool = kwargs.get("title_cache_enabled", True)
+
     @classmethod
     def from_yaml(cls, path: Path) -> Config:
         if not path.exists():