[Serializer] Introduce named serializers

[fabpot]

Q	A
Feature PR	symfony/symfony#56823
PR author(s)	@HypeMC
Merged in	7.2

We created this issue to not forget to document 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 against the 7.2 branch in the symfony-docs repository.

Thank you! 😃

[wouterj]

This is a great feature! And one that was desperately missing in Symfony, I've had lots of DI configuration debugging sessions to make this work in applications before.

@HypeMC I'm not sure if you are already planning on writing the documentation, but I've restarted my Serializer docs rewrite PR (#17783) last week. I'm hoping to finish it this weekend, so I would suggest waiting for that before creating a new section.

[HypeMC]

@wouterj Great, thanks for the heads up. I was planning on doing it in the following weeks, but I'll wait for you to finish then, before I continue.