Added multilingual support for the base tranform_api module

...uage/src/Plugin/Transform/Field/LanguageCodeTransform.php

...uage/src/Plugin/Transform/Field/LanguageNameTransform.php

src/FieldTransformBase.php

src/Plugin/Transform/Block/SystemMainTransformBlock.php

src/Plugin/Transform/Field/EntityReferenceLinksTransform.php

src/Plugin/Transform/Type/Entity.php

src/Transform/EntityTransform.php