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/formatters/special_info_formatter.py

@@ -11,7 +11,7 @@ class SpecialInfoFormatter:
         return special_info or ""
 
     @staticmethod
-    def format_database_info(database_info):
+    def format_database_info(database_info) -> str | None:
         """Format database info dictionary or tuple/list into a string"""
         import logging
         import os