chore(sample): refactor sample code to follow rn best practices (#3990)

Co-authored-by: Olivier Bouillet <62574056+freeboub@users.noreply.github.com>

examples/basic/src/components/VideoTracksSelector.tsx

@@ -1,9 +1,9 @@
 import {Picker} from '@react-native-picker/picker';
 import {Text} from 'react-native';
 import {
-  SelectedVideoTrack,
   SelectedVideoTrackType,
-  VideoTrack,
+  type SelectedVideoTrack,
+  type VideoTrack,
 } from 'react-native-video';
 import styles from '../styles';
 import React from 'react';