[FEAT] [PARA V2] Add attachments iframe

apps/maarch_entreprise/index.php

...maarch_entreprise/js/angular/app/Views/signatureBook.html

...rch_entreprise/js/angular/app/signature-book.component.js

...rch_entreprise/js/angular/app/signature-book.component.ts

apps/maarch_entreprise/js/angular/main.bundle.min.js

apps/maarch_entreprise/js/functions.js

apps/maarch_entreprise/merged_jsAbstract.php

modules/attachments/attachments_content.php

modules/attachments/del_attachment.php

modules/attachments/js/functions.js

modules/attachments/xml/IVS/validation_rules.xml

modules/visa/Controllers/VisaController.php

rest/index.php