feat: Add conversion and deletion confirmation screens, enhance media panel properties

- Implemented ConvertConfirmScreen for confirming AVI to MKV conversions with audio and subtitle options.
- Added DeleteConfirmScreen for confirming file deletions with detailed file information.
- Enhanced MediaPanelView to include additional MediaInfo properties such as video, audio, and subtitle tracks.
- Updated MediaPanelProperties to extract and display raw MediaInfo track data.
- Introduced HelpScreen for user guidance on application features and navigation.
- Created OpenScreen for directory path input with validation.
- Developed RenameConfirmScreen for renaming files with user confirmation and editing capabilities.
- Added SettingsScreen for configuring application settings, including cache TTL and HEVC encoding options.
- Updated imports and module exports in views to accommodate new screens.

renamer/extractors/fileinfo_extractor.py

@@ -44,7 +44,7 @@ class FileInfoExtractor:
         self.cache = Cache() if use_cache else None  # Singleton cache for @cached_method decorator
         self.settings = None  # Will be set by Settings singleton if needed
         self._stat = file_path.stat()
-        self._cache: dict[str, any] = {}  # Internal cache for method results
+        self._cache: dict = {}  # Internal cache for method results
 
     @cached_method()
     def extract_size(self) -> int:
@@ -91,4 +91,4 @@ class FileInfoExtractor:
             or None if no extension exists
         """
         ext = self._file_path.suffix.lower().lstrip('.')
-        return ext if ext else None
+        return ext if ext else None