add web demo

apps/web/ui/editor.tsx

@@ -0,0 +1,28 @@
+"use client";
+
+import { useState } from "react";
+import { Editor as InkeEditor } from "inke";
+
+export default function Editor() {
+  const [saveStatus, setSaveStatus] = useState("Saved");
+
+  return (
+    <div className="relative w-full max-w-screen-lg">
+      <div className="absolute right-5 top-5 z-10 mb-5 rounded-lg bg-stone-100 px-2 py-1 text-sm text-stone-400">
+        {saveStatus}
+      </div>
+      <InkeEditor
+        onUpdate={() => {
+          setSaveStatus("Unsaved");
+        }}
+        onDebouncedUpdate={() => {
+          setSaveStatus("Saving...");
+          // Simulate a delay in saving.
+          setTimeout(() => {
+            setSaveStatus("Saved");
+          }, 500);
+        }}
+      />
+    </div>
+  );
+}