Replace StyleCI to PHP CS Fixer

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.52%. Comparing base (7359b97) to head (34e0b23).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #302   +/-   ##
=========================================
  Coverage     99.51%   99.52%           
  Complexity      313      313           
=========================================
  Files            19       19           
  Lines           829      838    +9     
=========================================
+ Hits            825      834    +9     
  Misses            4        4           

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