Support aggregation of attributes from multiple databases #161

Job	Run time
Quality control	37s
Security checks	23s
Linter / json-linter	28s
Linter / yaml-linter	4s
Linter / style-linter	0s
PHP-Linter (8.2) / linter	15s
PHP-Linter (8.4) / linter	14s
PHP-Linter (8.1) / linter	13s
PHP-Linter (8.3) / linter	11s
Linter / ecmascript-linter	-1s
Unit tests, PHP 8.2, windows-latest	1m 4s
Unit tests, PHP 8.2, ubuntu-latest	48s
Unit tests, PHP 8.5, ubuntu-latest	47s
Unit tests, PHP 8.4, ubuntu-latest	37s
Unit tests, PHP 8.3, ubuntu-latest	42s
Unit tests, PHP 8.4, windows-latest	1m 34s
Unit tests, PHP 8.3, windows-latest	1m 22s
Unit tests, PHP 8.5, windows-latest	1m 22s
Code coverage	8s
Cleanup artifacts	4s
	10m 52s

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