Priority of cards

[Please describe the Feature Request here]

When you are redacting cards for exams, I always notice that there are some hot topics that I’d like to prioritize. So there should be an option like a flag for “very important cards” so these cards are shown first when reviewing them.

[ Tell us why it is important / how it benefits your workflow here]

• Most efficient study time.

• Sometimes there are some cards I want to review, but the application shows them to me at the end.