feat: add zip file to download pdf and certificate

Author: raktima-opensignlabs

apps/OpenSign/package-lock.json

@@ -14,6 +14,7 @@
     "i18next": "^23.14.0",
     "i18next-browser-languagedetector": "^8.0.0",
     "i18next-http-backend": "^2.6.1",
+    "jszip": "^3.10.1",
     "jwt-decode": "^4.0.0",
     "moment": "^2.30.1",
     "nth-check": "^2.1.1",

apps/OpenSign/package.json

@@ -648,5 +648,8 @@
     "p4": "Please choose the option that best suits your document signing requirements."
   },
   "advanced-options":"Advanced options",
-  "hide-advanced-options":"Hide Advanced options"
+  "hide-advanced-options":"Hide Advanced options",
+  "download-files":"Download files",
+  "download-pdf":"Download Pdf",
+  "pdf-certificate":"Download Pdf + Certificate"
 }

apps/OpenSign/public/locales/en/translation.json

@@ -647,6 +647,9 @@
     "p4": "Veuillez choisir l'option qui correspond le mieux à vos exigences en matière de signature de documents."
   },
   "advanced-options":"Options avancées",
-  "hide-advanced-options": "Masquer les options avancées"
+  "hide-advanced-options": "Masquer les options avancées",
+   "download-files" :"Télécharger des fichiers",
+   "download-pdf" :"Télécharger le PDF",
+  "pdf-certificate"  :"Télécharger Pdf + Certificat"
 
 }