Adding ability to change application font size

[raivisdejus]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 68.42105% with 6 lines in your changes missing coverage. Please review.

Project coverage is 82.61%. Comparing base (300b4fe) to head (a892120).

Files	Patch %	Lines
...s/preferences_dialog/general_preferences_widget.py	53.84%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #822      +/-   ##
==========================================
- Coverage   82.67%   82.61%   -0.07%     
==========================================
  Files          85       85              
  Lines        4532     4549      +17     
==========================================
+ Hits         3747     3758      +11     
- Misses        785      791       +6     

Flag	Coverage Δ
Linux	81.88% <63.15%> (-0.07%)	⬇️
macOS	81.93% <63.15%> (-0.09%)	⬇️

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