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/metadata_extractor.py

@@ -42,7 +42,7 @@ class MetadataExtractor:
         self.file_path = file_path
         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._cache: dict[str, any] = {}  # Internal cache for method results
+        self._cache: dict = {}  # Internal cache for method results
         try:
             self.info = mutagen.File(file_path) # type: ignore
         except Exception as e:
@@ -114,4 +114,4 @@ class MetadataExtractor:
             return 'Unknown'
         except Exception as e:
             logger.debug(f"Failed to detect MIME type for {self.file_path}: {e}")
-            return 'Unknown'
+            return 'Unknown'