Make sonata optional, support twig components

[tacman]

Feature Request

Currently sonata/blocks-bundle is required. It seems that this could also be rendered as a twig ux component.

{{ sonata_block_render({ 'type': 'nucleos_maps.block.map' }, {
    'longitude': '9.993682',
    'latitude': '53.551086',
    'service': 'openstreetmap'
}) }}

<twig:nucleos_map :longitude="place.lng" :latitude="place.lat" service="openstreetmap" />