Create flashcard table in the database

[Ahmed Elsakaan]

Columns:

• id (UUID unique)

• userId (optional, if orgId is there)

• orgId (optional, if userId is there)

• question

• answer

• lastAttempted (date, optional)

• lastAttemptCorrect (boolean, optional)

• createdAt

• notebookId (reference to the notebook where the flashcard was generated)

• moduleId (reference to the module that the flashcard belongs to)