Tests

Added `make infection` command to run it locally #24052

Job	Run time
Tests (8.2, windows-latest)	18s
Integration tests (ubuntu-latest)	15s
Determine levels tests matrix	21s
Tests (8.2, ubuntu-latest)	20s
Integration tests (windows-latest)	18s
Tests (8.4, ubuntu-latest)	16s
Tests (8.3, ubuntu-latest)	16s
Tests (8.5, ubuntu-latest)	20s
Tests (8.5, windows-latest)	18s
Tests (8.4, windows-latest)	19s
Tests with old PHPUnit (7.4, windows-latest)	18s
Tests with old PHPUnit (7.4, ubuntu-latest)	24s
Tests (8.3, windows-latest)	18s
Tests with old PHPUnit (8.1, windows-latest)	19s
Tests with old PHPUnit (8.0, windows-latest)	19s
Tests with old PHPUnit (8.1, ubuntu-latest)	21s
Tests with old PHPUnit (8.0, ubuntu-latest)	21s
Mutation Testing	1s
Levels tests	1s
	5m 23s

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