feat : add download btn in tutorial page for open vpn

package.json

@@ -20,6 +20,7 @@
     "@tsparticles/slim": "^3.4.0",
     "axios": "^1.7.2",
     "country-flag-icons": "^1.5.11",
+    "file-saver": "^2.0.5",
     "formik": "^2.4.6",
     "framer-motion": "^11.2.9",
     "lodash.debounce": "^4.0.8",
@@ -37,6 +38,7 @@
     "yup": "^1.4.0"
   },
   "devDependencies": {
+    "@types/file-saver": "^2.0.7",
     "@types/nprogress": "^0.2.3",
     "@types/react": "^18.2.66",
     "@types/react-dom": "^18.2.22",