💩(frontend) introduce an official footer

Based on Florian's feedbacks, this is mandatory as the project is
getting attention.

Bad code, needs a refactor.

src/frontend/src/features/rooms/components/Conference.tsx

@@ -99,7 +99,7 @@ export const Conference = ({
 
   return (
     <QueryAware status={isFetchError ? createStatus : fetchStatus}>
-      <Screen header={false}>
+      <Screen header={false} footer={false}>
         <LiveKitRoom
           room={room}
           serverUrl={data?.livekit?.url}