implemented authentication

package.json

@@ -11,7 +11,9 @@
   },
   "devDependencies": {
     "@nuxt/devtools": "latest",
+    "@pinia/nuxt": "^0.5.1",
     "nuxt": "^3.8.0",
+    "pinia": "^2.1.7",
     "vue": "^3.3.7",
     "vue-router": "^4.2.5"
   },
@@ -21,9 +23,11 @@
     "bcryptjs": "^2.4.3",
     "cors": "^2.8.5",
     "express": "^4.18.2",
+    "h3": "^1.11.1",
     "jsonwebtoken": "^9.0.2",
     "leading-trim": "^1.0.2",
     "mariadb": "^3.2.3",
+    "pinia-plugin-persistedstate": "^3.2.1",
     "uuid": "^9.0.1",
     "vite": "^5.1.0",
     "vuex": "^4.1.0"