[make:crud] Allow EntityValueResolver to return a list of entities

[seb-jean]

Q	A
Feature PR	symfony/symfony#53365
PR author(s)	@HypeMC
Merged in	7.1

We created this issue to not forget to implement this new feature. We would really appreciate if you can help us with this task. If you are not sure how to do it, please ask us and we will help you.

To fix this issue, please create a PR in the Symfony Maker Bundle repository.

Thank you! 😃