Homework and UI improvements

[LeviiiCraft2]

This PR introduces the homeworks view and several visual + structural improvements across the widget views.

Highlights

• New view: Added homeworks.ts, a new widget view that displays homework items with subject, teacher, and due date.
  • Supports compact mode (2-column layout).
  • Added completion toggle via URL parameter (toggleHomework).
  • Integrates due date color coding for upcoming / overdue tasks.
  • Supports liquidGlass appearance for consistent semi-transparent backgrounds.
• Visual updates:
  • Major revision of the Absences View (added visualExcuseStatus, improved time formatting, reason & text display, ...).
  • Updated absences, exams, and grades views to use dynamic item colors via getItemColors().
  • Improved contrast and readability across light/dark modes.
  • Adjusted font scaling and padding for tighter, more uniform layout.
• Widget core improvements (widget.ts):
  • Added empty-view messages with motivational or humorous quotes for each view.
  • Added header rendering (shows current views in use).
  • Enhanced data validation & debug logging for better stability.
  • Improved layout handling and fallback when no data or unknown parameters are present.

Changes

• 21 files changed
  • src/views/homeworks.ts → +200 lines (new feature)
  • src/views/absences.ts → refined layout & color logic
  • src/views/exams.ts, src/views/grades.ts → integrated getItemColors()
  • src/widget.ts → refactored layout, added headers, no-data quotes, and new view registration
• Total: 1,138 additions, 289 deletions

Result

This update adds a fully functional Homework view and refreshes the visual consistency of all widget views.
Widgets now look cleaner, adapt better to light/dark themes, and feel more lively even when data is empty.
UntisWidget-homeworks-and-ui-improvements.js
#10