[GLEN Learn] Display Lesson Carousel

[rxun]

On the assignment page, there should be a carousel of the existing lessons.

• Lessons should be sorted in order of deadline, with those due earlier going first
• Check-marked lessons are those that are completed by the deadline and should be displayed after active lessons.
• Grayed-out lessons are those that are NOT completed by the deadline. These should come after check-marked lessons.
  --> Note: The same lesson can appear multiple times if they have different due dates.
  --> Note: If a student did not complete a lesson on time and the teacher re-assigns it, the grayed-out lesson should remain there and a new active card should also be displayed.
• Bottom bar should include a back-button to go back to the main screen