Add TestContainer and start using it to reduce overhead #1292

Job	Run time
Linter / json-linter	18s
PHP-Linter (8.4) / linter	13s
Linter / yaml-linter	4s
PHP-Linter (8.5) / linter	12s
PHP-Linter (8.3) / linter	10s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.4, windows-latest	54s
Unit tests, PHP 8.3, ubuntu-latest	23s
Unit tests, PHP 8.4, ubuntu-latest	18s
Unit tests, PHP 8.5, ubuntu-latest	20s
Unit tests, PHP 8.5, windows-latest	53s
Unit tests, PHP 8.3, windows-latest	1m 2s
Security checks	16s
Code coverage	7s
Quality control	17s
Cleanup artifacts	5s
	5m 32s

Provide feedback