Add reusable phplinter-workflow #106

Job	Run time
Linter	1m 24s
Security checks	18s
Quality control	34s
Unit tests, PHP ${{ matrix.php-versions }}, ${{ matrix.operating-system }}	0s
Unit tests, PHP ${{ matrix.php-versions }}, ${{ matrix.operating-system }}	0s
Code coverage	0s
Cleanup artifacts	0s
	2m 16s

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