Track user answers in use user_flashcards_record table

[binamkayastha]

Primary: Sanskar

• Update the database to incorporate the thumbs down/thumbs up data, whether it's modifying the existing user_flashcards_record table or creating a new one.
• Determine what the behavior of thumbs down/thumbs up will be (you can also ask users during user testing what they think it should do), and try to implement something for it.
• Update the handleNextWord function in the Flashcard component to utilize seen/thumbs up/down data.