add basic backend code

web/frontend/package.json

@@ -11,6 +11,7 @@
     "core-js": "^3.6.4",
     "vue": "^2.6.11",
     "vue-class-component": "^7.2.2",
+    "vue-meta": "^2.3.3",
     "vue-property-decorator": "^8.3.0",
     "vue-router": "^3.1.5"
   },
@@ -19,9 +20,11 @@
     "@vue/cli-plugin-router": "~4.2.0",
     "@vue/cli-plugin-typescript": "~4.2.0",
     "@vue/cli-service": "~4.2.0",
+    "prerender-spa-plugin": "^3.2.1",
     "sass": "^1.25.0",
     "sass-loader": "^8.0.2",
     "typescript": "~3.7.5",
+    "vue-cli-plugin-prerender-spa": "~1.1.6",
     "vue-cli-plugin-pug": "^1.0.7",
     "vue-template-compiler": "^2.6.11"
   },