PKI: add support to export certs in PKCS12 format

backend/package.json

@@ -185,6 +185,7 @@
     "@sindresorhus/slugify": "1.1.0",
     "@slack/oauth": "^3.0.2",
     "@slack/web-api": "^7.8.0",
+    "@types/node-forge": "^1.3.14",
     "@ucast/mongo2js": "^1.3.4",
     "acme-client": "^5.4.0",
     "ajv": "^8.12.0",
@@ -224,6 +225,7 @@
     "ms": "^2.1.3",
     "mysql2": "^3.9.8",
     "nanoid": "^3.3.8",
+    "node-forge": "^1.3.1",
     "nodemailer": "^6.9.9",
     "oci-sdk": "^2.108.0",
     "odbc": "^2.4.9",