feat: web cache (#12403)

docs/staticwebapp.config.json

@@ -3,5 +3,13 @@
         "404": {
             "rewrite": "/docs/404.html"
         }
+    },
+    "routes": [
+    {
+      "route": "/*.{jpg,gif,png,ico,svg,css,scss,js,webp,webmanifest}",
+      "headers": {
+        "cache-control": "public, max-age=604800, immutable"
+      }
     }
+  ]
 }