Added address entity also to contact in completion form

[alexander-schranz]

Q	A
Bug fix?	no
New feature?	no
BC breaks?	no
Deprecations?	no
License	MIT

What's in this PR?

Added address entity also to contact in completion form.

Why?

Currently there exists no address fields in the completion as the address entity not exist Symfony would not render the fields because of CollectionType behaviour.

Example Usage

CompletionContactType.php:

            $builder->add(
                'contactAddresses',
                CollectionType::class,
                [
                    'label' => false,
                    'entry_type' => CompletionContactAddressType::class,
                    'entry_options' => [
                        'label' => false,
                    ],
                ]
            );