Add Social Media Features

[Lim Chee Kin]

After the backend is delivered #23:

• User Comments
• Share https://github.com/fluttercommunity/plus_plugins/tree/main/packages/share_plus
• View Count
• Related Showcases
• Activity Logs
• Push Notifications
• Update favorite/Unfavorite
• Update User Profile
• https://github.com/rizwanch173/Flutter-Social-App-UI-Kit