createTimers method

Implementation

void createTimers(){
  if(bookingHistory.value.bookingsList?.isNotEmpty ?? false){
    final bookings = bookingHistory.value.bookingsList!;
    bookings.forEachIndexed((index,e){
      if(e.hasTimer){
        if(!timers.containsKey(e.id!)){
          startTimer(e);
        }
      }
    });
  }
}