chore: add vercel.json

Author: jakobrosenberg

Diff for: vercel.json

@@ -0,0 +1,12 @@
+{
+    "version": 2,
+    "routes": [
+      {
+        "handle": "filesystem"
+      },
+      {
+        "src": "/.*",
+        "dest": "/index.html"
+      }
+    ]
+  }