feat: remove data service

[NilsOveTen]

resolve #182

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.51%. Comparing base (1039754) to head (16d87d0).
Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #185      +/-   ##
============================================
+ Coverage     76.70%   77.51%   +0.80%     
- Complexity      124      126       +2     
============================================
  Files            23       23              
  Lines           644      667      +23     
  Branches        105      108       +3     
============================================
+ Hits            494      517      +23     
  Misses           79       79              
  Partials         71       71              

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