@template for Query and update docs for EntityRepository

[dimajolkin]

psalm level 1
$this->createQueryBuilder('t')->getQuery()->getResult();
Аfter these fixes the psalm stopped swearing on the repository

commit: prevent false-positive ERROR: PropertyNotSetInConstructor
moved form #87

maybe someone else will come in handy, maybe it needs to be improved)

[orklah]

Thanks! We have some CI issues, they seem related to the future realease of Psalm5, I'll try to take a look before I can merge this

[orklah]

Can you rebase? It should be okay now

[dimajolkin]

Fine, Tests passed)

[orklah]

Thanks!