New User Roles, Holiday Posts, and Language Support

Added:

• Support for holiday and special occasion posts with customizable options.
• A new interface for managing user roles and permissions.
• An activity logging system to track important events in the app.
• Chinese language support with UI translations.
  Improved:
• The onboarding process now includes new steps and rewards to guide users.
• The post generation interface has better color settings and dynamic aspect ratio choices.
• Loading indicators now include shimmer effects for a smoother experience.
  Fixed:
• Email error handling is more reliable and informs users properly.
• Button configurations now correctly prevent actions when loading.
• Form validations show clearer error messages to help users.