Add Favorite Emojis support

Currently, the React v7 UI Kit's built-in emoji keyboard supports browsing emojis by standard categories but does not provide a way for users to quickly access their most frequently used or preferred emojis.

It would be beneficial to introduce a Favorites or Recents tab that allows users to:

1. View recently used emojis.

• 2. Mark emojis as favorites for quick access.
  

• 3. Persist favorite emojis across sessions.