feat: implement persistent configuration system for settings

[dnim]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 89.04110% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.67%. Comparing base (be82672) to head (fa541fb).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/app.ts	77.77%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
+ Coverage   77.97%   83.67%   +5.70%     
==========================================
  Files           8        9       +1     
  Lines         622      674      +52     
  Branches      161      168       +7     
==========================================
+ Hits          485      564      +79     
+ Misses        137      110      -27     

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