Add antialias disabling support to fonts

[MyreMylar]

As title.

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (dccb0e5) 95.87% compared to head (6a9f189) 95.83%.
Report is 4 commits behind head on main.

Files	Patch %	Lines
pygame_gui/core/ui_appearance_theme.py	42.85%	4 Missing ⚠️
pygame_gui/core/gui_font_freetype.py	60.00%	2 Missing ⚠️
pygame_gui/ui_manager.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #484      +/-   ##
==========================================
- Coverage   95.87%   95.83%   -0.04%     
==========================================
  Files          83       83              
  Lines       11580    11599      +19     
==========================================
+ Hits        11102    11116      +14     
- Misses        478      483       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.