refactor: introduce PersistentObjectFactory and deprecate PersistentProxyObjectFactory with final #1945

Job	Run time
Build Documentation	13s
Sync meta files	0s
Code Coverage	56s
Static Analysis	18s
P:8.1, S:6.3.*, D:mysql (dama)	22s
P:8.1, S:6.3.*, D:mongo	36s
P:8.1, S:6.4.*, D:mysql (dama)	20s
P:8.1, S:6.4.*, D:mongo	21s
P:8.2, S:6.3.*, D:mysql (dama)	19s
P:8.2, S:6.3.*, D:mongo	20s
P:8.2, S:6.4.*, D:mysql (dama)	22s
P:8.2, S:6.4.*, D:mongo	22s
P:8, S:5.4.*, D:mysql\|mongo (lowest) (dama)	20s
composer-validate / Validate composer.json	7s
P:8.2, S:*, D:none	17s
P:8.2, S:*, D:mysql\|mongo (dama)	21s
P:8.2, S:*, D:pgsql\|mongo (dama)	20s
P:8.2, S:*, D:mysql	23s
P:8.2, S:*, D:pgsql	20s
Run php-cs-fixer	0s
	6m 37s

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