IntegerAnonymizer - add possibility to anonymize value by adding noise

[SimonMellerin]

Add options to IntegerAnonymizer to be able to anonymize int by adding noise: a delta or a percent.

    #[ORM\Column]
    // This will add to the value a random value between -10 and 10
    #[Anonymize(type: 'integer', options: ['delta' => '10'])]
    // This will add to the value a random value between -10 and 10 and will keep an absolute value
    #[Anonymize(type: 'integer', options: ['delta' => '10', 'unsigned' => true])]
    // This will multiply the value by a random value between 0.9 and 1.1
    #[Anonymize(type: 'integer', options: ['percent' => 10])]
    private ?int $age = null;

[SimonMellerin]

done with #110