Replace the fluent PHP config format by the array-shape one

[nicolas-grekas]

Related to symfony/symfony#62092 and https://symfony.com/blog/new-in-symfony-7-4-deprecated-xml-configuration

The diff itself isn't really interesting. What's interesting is comparing yaml to php arrays.

This can give a nice overview of the new format.

[nicolas-grekas]

PR ready.
This took me quite some time to do manually, but with some LLM help, I shouldn't have made much mistakes.

[javiereguiluz]

Thanks for this! We should merge this soon to aovid merge conflicts with other PRs.

However, GitHub shows errors on these 5 files, so we should fix those:

• logging/channels_handlers.rst
• logging/monolog_console.rst
• service_container/import.rst
• configuration.rst
• http_client.rst