chore: upgraded app_settings to 5.1.1

[monsieurtanuki]

What

• Upgraded package app_settings to version 5.1.1, with minor refactoring needed.

[codecov-commenter]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (0ddd5c6) 9.90% compared to head (0ee7c1a) 9.89%.
Report is 2 commits behind head on develop.

Files	Patch %	Lines
packages/smooth_app/lib/pages/image_crop_page.dart	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           develop   #4816      +/-   ##
==========================================
- Coverage     9.90%   9.89%   -0.01%     
==========================================
  Files          310     311       +1     
  Lines        15759   15784      +25     
==========================================
+ Hits          1561    1562       +1     
- Misses       14198   14222      +24     

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[g123k]

Ok for me 👍