feat: re-implement contact form submissions api endpoint for website

src/BusProNet/XmlParser/ApiResponseParser.php

@@ -36,6 +36,8 @@ class ApiResponseParser extends AbstractParser
                     case 'Adressdaten_Ändern':
                     case 'Newsletter':
                         return (new PersonalDataParser())->parse($resultNode);
+                    case 'Adresse_Neu':
+                        return (new ContactFormResponseParser())->parse($resultNode);
                     case 'SelektionCRM':
                     case 'SelektionCRM_Ändern':
                         return (new CrmAttributesResponseParser())->parse($resultNode);