FEAT #9836 multiple signature with external signatory book

...maarch_entreprise/actions/sendToExternalSignatureBook.php

modules/visa/batch/batch_tools.php

modules/visa/batch/process_mailsFromSignatoryBook.php

modules/visa/class/MaarchParapheurController.php

package.json

src/app/attachment/models/AttachmentModelAbstract.php

src/app/resource/controllers/StoreController.php

src/frontend/css/maarch-material.css