KAT-108: Added directories enums, exception, model

rescueapp/lib/main.dart

...app/lib/start_triage_system/enums/start_triage_state.dart

...age_system/exceptions/invalid_triage_state_exception.dart

...b/start_triage_system/invalid_triage_state_exception.dart

rescueapp/lib/start_triage_system/model/startTriage.dart

...ib/start_triage_system/widgets/after_opening_airways.dart

rescueapp/lib/start_triage_system/widgets/ambulatory.dart

...triage_system/widgets/breathing_frequency_per_minute.dart

rescueapp/lib/start_triage_system/widgets/camera_access.dart

rescueapp/lib/start_triage_system/widgets/circulation.dart

rescueapp/lib/start_triage_system/widgets/lock_screen.dart

rescueapp/lib/start_triage_system/widgets/neurology.dart

..._triage_system/widgets/spontaneous_breathing_present.dart