Update SidepanelChat imports and add SidepanelSettingsHeader route

src/routes/index.tsx

@@ -1,5 +1,6 @@
 import { Route, Routes } from "react-router-dom"
 import { SidepanelChat } from "./sidepanel-chat"
+import { SidepanelSettingsHeader } from "~components/Sidepanel/Settings/header"
 
 export const Routing = () => <Routes></Routes>
 
@@ -7,6 +8,7 @@ export const SidepanelRouting = () => (
   <div className="dark">
     <Routes>
       <Route path="/" element={<SidepanelChat />} />
+      <Route path="/settings" element={<SidepanelSettingsHeader />} />  
     </Routes>
   </div>
 )