[Config] Allow custom meta location in `ResourceCheckerConfigCache`

[fabpot]

Q	A
Feature PR	symfony/symfony#52043
PR author(s)	@ruudk
Merged in	7.1

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 7.1 branch in the symfony-docs repository.

Thank you! 😃

[alamirault]

Only ConfigCache is documented in components/config/caching.rst

However metaFile was not added toConfigCache construct (which extends ResourceCheckerConfigCache), should we update this class in symfony source code ?

[alamirault]

I created symfony/symfony#53868 to also allow to configure meta file in ConfigCache