feat: Add admin experiment management pages and components

- Implemented ExperimentPage for viewing and editing individual experiments.
- Created ExperimentsAdminPage for managing all experiments with a list and a modal for creating new experiments.
- Developed AnnotatePage for annotating experiments with different views based on annotation tools.
- Added CreateExperimentModal for creating new experiments with dataset selection.
- Introduced DeleteExperimentButton for confirming and executing experiment deletions.
- Built EditableExperimentHeader for editing experiment details.
- Created ExperimentsList component to display a list of experiments with links to their details.

src/app/admin/experiments/page.tsx

@@ -0,0 +1,37 @@
+import Link from 'next/link';
+import ExperimentsList from '@/components/ExperimentsList';
+import CreateExperimentModal from '@/components/CreateExperimentModal';
+import { requireAdmin } from '@/lib/auth';
+import { redirect } from 'next/navigation';
+
+export default async function ExperimentsAdminPage() {
+  const result = await requireAdmin();
+
+  if (!result.authenticated) {
+    redirect("/user/sign-in");
+  }
+
+  if (!result.admin) {
+    redirect("/");
+  }
+
+  return (
+    <div className="px-4 sm:px-6 lg:px-8 py-8">
+      <Link
+        href="/admin"
+        className="text-blue-500 hover:text-blue-600 mb-6 inline-block"
+      >
+        ← Back to Admin
+      </Link>
+
+      <div className="mb-8">
+        <h1 className="text-3xl font-bold mb-4">Experiments Management</h1>
+        <p className="text-gray-600">Manage all experiments across datasets</p>
+      </div>
+
+      <CreateExperimentModal />
+
+      <ExperimentsList />
+    </div>
+  );
+}