Support aggregation of attributes from multiple databases #178

Job	Run time
PHP-Linter (8.1) / linter	12s
PHP-Linter (8.4) / linter	17s
Linter / json-linter	27s
PHP-Linter (8.2) / linter	10s
Linter / yaml-linter	6s
PHP-Linter (8.3) / linter	13s
Linter / style-linter	0s
Linter / ecmascript-linter	0s
Unit tests, PHP 8.3, windows-latest	1m 22s
Unit tests, PHP 8.2, ubuntu-latest	41s
Unit tests, PHP 8.4, ubuntu-latest	1m 51s
Unit tests, PHP 8.3, ubuntu-latest	53s
Unit tests, PHP 8.5, windows-latest	1m 12s
Unit tests, PHP 8.2, windows-latest	1m 30s
Unit tests, PHP 8.4, windows-latest	1m 25s
Unit tests, PHP 8.5, ubuntu-latest	47s
Quality control	34s
Security checks	23s
Code coverage	7s
Cleanup artifacts	4s
	12m 14s

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