Enable typescript support

web/package.json

@@ -19,6 +19,7 @@
   "devDependencies": {
     "@vitejs/plugin-vue": "^2.0.0",
     "@vue/cli-plugin-babel": "5.0.0-beta.7",
+    "@vue/cli-plugin-typescript": "~4.5.0",
     "@vue/cli-service": "5.0.0-beta.7",
     "@vuetify/vite-plugin": "^1.0.0-alpha.3",
     "sass": "^1.38.0",

web/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "esnext",
+    // this enables stricter inference for data properties on `this`
+    "strict": true,
+    "jsx": "preserve",
+    "moduleResolution": "node"
+  }
+}