Adopt SSP coding-style #641

Job	Run time
Linter / ecmascript-linter	19s
Linter / json-linter	30s
Linter / yaml-linter	7s
PHP-Linter (8.2) / linter	11s
PHP-Linter (8.3) / linter	15s
PHP-Linter (8.4) / linter	12s
PHP-Linter (8.5) / linter	10s
Linter / style-linter	0s
Unit tests, PHP 8.3, ubuntu-latest	28s
Unit tests, PHP 8.3, windows-latest	1m 5s
Unit tests, PHP 8.2, ubuntu-latest	25s
Unit tests, PHP 8.4, windows-latest	1m 18s
Unit tests, PHP 8.4, ubuntu-latest	22s
Unit tests, PHP 8.5, windows-latest	1m 3s
Unit tests, PHP 8.2, windows-latest	1m 14s
Unit tests, PHP 8.5, ubuntu-latest	20s
Quality control	30s
Security checks	20s
Code coverage	11s
Cleanup artifacts	5s
	9m 5s

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