Added a streak system and a needs_reminder feature that checks due dates of chores to the current date

hudsonrothschildrequested to merge
hudson-reminders-and-streaks into main

Added a streak system to User.java that updates based on a user completing chores. Added a needs_reminder feature that checks the due date of a chore from Chore.java and compares to the current date in User.java. No AI was used.

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