Added GroupProvider

pages/_app.tsx

@@ -1,8 +1,11 @@
 import '../styles/globals.css'
 import type { AppProps } from 'next/app'
+import {GroupProvider} from "../components/contexts/GroupProvider";
 
 function MyApp({ Component, pageProps }: AppProps) {
-  return <Component {...pageProps} />
+  return <GroupProvider>
+    <Component {...pageProps} />
+  </GroupProvider>
 }
 
 export default MyApp