Replace StyleCI to PHP CS Fixer

[vjik]

.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (b41ada7) to head (0d9fe8a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##              master       #98   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       140       140           
===========================================
  Files              9         9           
  Lines            323       325    +2     
===========================================
+ Hits             323       325    +2     

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