Update SidepanelChat imports and add SidepanelSettingsHeader route

src/routes/sidepanel-settings.tsx

@@ -0,0 +1,11 @@
+import { SidepanelSettingsHeader } from "~components/Sidepanel/Settings/header"
+
+export const SidepanelSettings = () => {
+  return (
+    <div className="flex bg-white dark:bg-black flex-col min-h-screen mx-auto max-w-7xl">
+      <div className="sticky top-0 z-10">
+        <SidepanelSettingsHeader />
+      </div>
+    </div>
+  )
+}