FEAT #8753 Get Attachment

rest/index.php

sql/data_fr.sql

sql/structure.sql

src/app/attachment/controllers/AttachmentController.php

src/app/attachment/models/AttachmentModel.php

src/app/attachment/models/AttachmentModelAbstract.php

src/app/convert/controllers/ConvertPdfController.php

src/app/convert/controllers/ConvertThumbnailController.php

src/app/convert/models/AdrModel.php

src/app/document/controllers/DocumentController.php

...app/signatureBook/controllers/SignatureBookController.php