- Add EarTrumpetColorsSettingsPageViewModel with custom color themes
- Add EarTrumpetAnimationSettingsPageViewModel with eco mode and FPS settings
- Add EarTrumpetCustomizationSettingsPageViewModel for global customization
- Add ColorPickerPopup control for color selection
- Add IntToBoolConverter and NullToBoolConverter helpers
- Update VolumeSlider with smooth animation support
- Update SettingsWindow with new customization pages
- Rewrite README in clean, minimal style
