Change the EKAttributes.Precedence.enqueue(priority: Priority) 's behavior.

[tospery]

1. In case no previous entry is currently presented, display the new entry.
2. In case there is an entry that is currently presented - Compare their priorities:
   (1) When new entry's priority is greater than old, present it and enqueue the old entry, the old entry will present just after the new entry is dismissed.
   (2) Otherwise, enqueue the new entry, an present it just after the previous one is dismissed.
   Like:
   case let .enqueue(curPriority):
   if !isCurrentlyDisplaying() {
   show(entryView: entryView, presentInsideKeyWindow: presentInsideKeyWindow, rollbackWindow: rollbackWindow)
   return
   }
   if let prev = isCurrentlyEntryView() {
   var prevPriority: EKAttributes.Precedence.Priority = .normal
   switch prev.attributes.precedence {
   case let .override(priority, _):
   prevPriority = priority
   case let .enqueue(priority):
   prevPriority = priority
   }
   if curPriority >= prevPriority {
   show(entryView: entryView, presentInsideKeyWindow: presentInsideKeyWindow, rollbackWindow: rollbackWindow)
   entryQueue.enqueue(entry: .init(view: prev, presentInsideKeyWindow: presentInsideKeyWindow, rollbackWindow: rollbackWindow))
   } else {
   entryQueue.enqueue(entry: .init(view: entryView, presentInsideKeyWindow: presentInsideKeyWindow, rollbackWindow: rollbackWindow))
   }
   }
   }