Updated Rector config and code to adhere to the latest rules.

[AlexSkrypnyk]

• Added default targets to be files in the current directory, so do not have to specify the path as ..
• Added code quality checks.
• Fixed code violations.

[codecov]

Codecov Report

Attention: 7 lines in your changes are missing coverage. Please review.

Comparison is base (a7c4c94) 70.59% compared to head (e88d956) 70.59%.

Files	Patch %	Lines
...ustom/ys_core/tests/src/Traits/ReflectionTrait.php	0.00%	5 Missing ⚠️
...es/custom/ys_core/tests/src/Traits/AssertTrait.php	0.00%	1 Missing ⚠️
...ules/custom/ys_core/tests/src/Traits/MockTrait.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1130   +/-   ##
========================================
  Coverage    70.59%   70.59%           
========================================
  Files           51       51           
  Lines         3186     3186           
========================================
  Hits          2249     2249           
  Misses         937      937           

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