feat: new weekly view for schedule page

[BalloonWinter53]

Closes #1761
Adds a new weekly view for the schedule page, with the help of the calendar_view package.

mind that this List / Calendar view toggle is temporary

To-do:

• Fix conflicts
• Fix dark mode
• Refactor schedule_list_view out of schedule_page_view
• Move List / Calendar view toggle to a floating button in the bottom right corner
• Remove the class type badge from the event card and show class type in the event card's background
• Add padding to the bottom of the page so nav bar doesnt cover the bottom classes
• Test in different text zoom levels and screen sizes

Review checklist

• Terms and conditions reflect the changes

View Changes

• Description has screenshots of the UI changes.
• Tested both in light and dark mode.
• New text is both in portuguese (PT) and english (EN).
• Works in different text zoom levels.
• Works in different screen sizes.

Performance

• No helper functions to return widgets are added. New widgets are created instead.
• Used ListView.builder for Long Lists.
• Controllers (TextEditingController, ...) are beeing disposed of in dispose() method.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 14%. Comparing base (d2e3b63) to head (f533ef9).
⚠️ Report is 1 commits behind head on develop.

❌ Your project check has failed because the head coverage (14%) is below the target coverage (70%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #1810    +/-   ##
========================================
+ Coverage        7%     14%    +7%     
========================================
  Files           38      35     -3     
  Lines         1886     926   -960     
========================================
- Hits           125     124     -1     
+ Misses        1761     802   -959     

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