fgm/php__symfony__book: FGM's version of the code suggested in the SF4 book. @ 954eaf1efd2058cb9adbaf64c068ce55d5aadaa4

Frederic G. MARAND 954eaf1efd Ch. 1: Support annotated routes with composer require annotations.		6 lat temu
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routing.yaml	f8830b8a47 Initial commit: generated skeleton + composer require server.	6 lat temu
security_checker.yaml	954eaf1efd Ch. 1: Support annotated routes with composer require annotations.	6 lat temu