Refactored code to use PHP8 attributes instead of annotations

In this change, Doctrine and validation annotations have been replaced with PHP8 Attributes. The Rector tool has been configured with a list of annotations to convert to attributes. As a consequence, the PHPStan's rules have been updated to reflect these changes. The PHP8's nullable operator (?) has been added where required, and comments in field declaration have been replaced with #[Attribute] syntax.

src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php

@@ -206,11 +206,9 @@ class ThirdParty implements TrackCreationInterface, TrackUpdateInterface, \Strin
     #[Context(normalizationContext: ['groups' => 'docgen:read'], groups: ['docgen:read:3party:parent'])]
     private string $profession = '';
 
-    /**
-     * @PhonenumberConstraint(type="any")
-     */
     #[Groups(['read', 'write', 'docgen:read', 'docgen:read:3party:parent'])]
     #[ORM\Column(name: 'telephone', type: 'phone_number', nullable: true)]
+    #[PhonenumberConstraint(type: 'any')]
     private ?PhoneNumber $telephone = null;
 
     #[ORM\Column(name: 'types', type: \Doctrine\DBAL\Types\Types::JSON, nullable: true)]