Adopt SSP coding-style #643

Job	Run time
PHP-Linter (8.4) / linter	14s
Linter / yaml-linter	7s
PHP-Linter (8.5) / linter	15s
Linter / ecmascript-linter	17s
Linter / json-linter	33s
PHP-Linter (8.3) / linter	12s
PHP-Linter (8.2) / linter	13s
Linter / style-linter	0s
Unit tests, PHP 8.3, windows-latest	1m 1s
Unit tests, PHP 8.2, windows-latest	1m 3s
Unit tests, PHP 8.5, windows-latest	1m 7s
Unit tests, PHP 8.4, windows-latest	58s
Unit tests, PHP 8.5, ubuntu-latest	19s
Unit tests, PHP 8.3, ubuntu-latest	22s
Unit tests, PHP 8.4, ubuntu-latest	18s
Unit tests, PHP 8.2, ubuntu-latest	23s
Security checks	25s
Quality control	27s
Code coverage	8s
Cleanup artifacts	3s
	8m 25s

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