* Implement custom icon for Vocalinux (Closes#10)
* Fix system tray icon display issue
* Temp commit before purging
* refactor: restructure project into proper vocalinux package
* test: fix and improve audio_feedback and tray_indicator tests with proper mocking and isolation
* test: update import paths in test files to use the new package structure
* Remove icon background
* fix: implement robust resource path discovery in audio_feedback module
* fix: improve resource discovery across application for consistent icon and sound loading
* chore: ensure uninstall script is compatible with new resource paths
* Fix black formatting
