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/ChillPersonBundle/Entity/Person.php

@@ -47,12 +47,6 @@ use Symfony\Component\Validator\Context\ExecutionContextInterface;
 
 /**
  * Person Class.
- *
- *     @PersonHasCenter
- *
- *     @HouseholdMembershipSequential(
- *         groups={"household_memberships"}
- *     )
  */
 #[DiscriminatorMap(typeProperty: 'type', mapping: ['person' => Person::class])]
 #[ORM\Entity]
@@ -60,6 +54,8 @@ use Symfony\Component\Validator\Context\ExecutionContextInterface;
 #[ORM\Index(name: 'person_birthdate', columns: ['birthdate'])] // @ORM\HasLifecycleCallbacks
 #[ORM\Table(name: 'chill_person_person')]
 #[ORM\HasLifecycleCallbacks]
+#[PersonHasCenter]
+#[HouseholdMembershipSequential(groups: ['household_memberships'])]
 class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateInterface, \Stringable
 {
     final public const BOTH_GENDER = 'both';
@@ -122,10 +118,9 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
 
     /**
      * The person's birthdate.
-     *
-     * @Birthdate
      */
     #[ORM\Column(type: \Doctrine\DBAL\Types\Types::DATE_MUTABLE, nullable: true)]
+    #[Birthdate]
     private ?\DateTime $birthdate = null;
 
     /**
@@ -316,10 +311,9 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
 
     /**
      * The person's mobile phone number.
-     *
-     * @PhonenumberConstraint(type="mobile")
      */
     #[ORM\Column(type: 'phone_number', nullable: true)]
+    #[PhonenumberConstraint(type: 'mobile')]
     private ?PhoneNumber $mobilenumber = null;
 
     /**
@@ -350,12 +344,9 @@ class Person implements HasCenterInterface, TrackCreationInterface, TrackUpdateI
 
     /**
      * The person's phonenumber.
-     *
-     * @PhonenumberConstraint(
-     *     type="landline",
-     * )
      */
     #[ORM\Column(type: 'phone_number', nullable: true)]
+    #[PhonenumberConstraint(type: 'landline')]
     private ?PhoneNumber $phonenumber = null;
 
     /**