- WebAppUser Class Fields: Added missing is_premium, added_to_attachment_menu, and allows_write_to_pm fields to WebAppUser class to align with the Telegram API.
- WebAppChat Class Implementation: Introduced the WebAppChat class with all its fields (id, type, title, username, and photo_url) as specified in the Telegram API, which was previously missing from the library.
- WebAppInitData Class Fields: Included previously omitted fields in the WebAppInitData class: chat, chat_type, chat_instance, to match the official documentation for a complete Telegram Web Apps support.