New Permissions System and UX Enhancements

Added:

• A permissions management interface lets admins set and manage user roles.
• A new access denied page informs users when access is restricted.
  Improved:
• Mobile interface optimized for smaller screens with adjusted breakpoints.
• Approval buttons now show tooltips when disabled due to permissions.
• Users can smoothly edit profile details and preview profile pictures.
• Password management UI improved with better input validation.
• Role fetching and management now works faster and adapts to organization settings.
  Fixed:
• OAuth management issues fixed for easier login provider use.
• Timezone and country selection now works without errors.
• Active subscription handling improved for better billing error management.