[docs] add PHP configuration snippets

[COil]

This is quite annoying to have this error with the maker bundle:

Let's make a password reset feature!
====================================
 [ERROR] The file "config/packages/security.yaml" does not exist. PHP & XML configuration formats are currently not
         supported.

So let's provide the PHP configuration snippets in the doc to ease the process.

This is a maker bundle issue, but the command should allow a forceparameter to generate the other files even if the PHP configuration is used.

[kbond]

👍🏻