Refactor flash carts widget

[KR155E]

• [ ] Allow to flash to specific carts (show flash button for each cart if there's more than one)
• [x] Update to latest hfcli and direct-to-flash programming
• [x] Parse HF32 progress
• [x] HF32 and HyperBoy port detection
• [x] Refactor pad function to use FileService instead of fs
• [x] Display warning and skip flashing if cart is too small to hold ROM
• [x] New events for flash start/succeed/fail
• [x] Tabbar decorators for above events + number of connected carts
• [x] Bug: Losing flash progress state when reconnecting any cart
• [ ] Generalize parser and expose to flash carts config
• [ ] Add support for additional actions. Can be useful for HyperBoy's save/load savegame feature.
• [x] Bug: Not flashing after being queued.
• [ ] Bug: If one flash cart fails while another one starts, the overall process breaks
• [ ] Allow to select any ROM for flashing