Improve and redesign home screen

- French localization — the app, widget, and Live Activity are now fully translated into French (232 UI strings + 205 exercise/muscle/equipment terms) - Sticky workout timers — duration and rest timers are now pinned at the top of the screen and stay visible while scrolling through your exercises - Multi-select when adding exercises to a template — you can now select several exercises at once instead of adding them one at a time - Equipment selector — new visual equipment picker (barbell, dumbbell, bodyweight, cable, machine, kettlebell, band, etc.) when adding exercises - Fixed rest timer — the break/rest timer no longer breaks after the app is killed and reopened - Fixed Live Activity — resolved an issue with the Live Activity timer

Improved the equipment selector when adding exercises, and fixed an issue where Live Activity could remain active after the app was closed during a workout.