Update library to support Bot API 9.4 and 9.5 (v1.2.0)
- Add MessageEntity 'date_time' support with unix_time and date_time_format.
- Implement Member Tags and associated permissions (can_edit_tag, can_manage_tags).
- Add support for topics in private chats across forum management methods.
- Update KeyboardButton and InlineKeyboardButton with styles and custom emoji icons.
- Add VideoQuality, UserProfileAudios, and first_profile_audio support.
- Update Gift entities with rarity and is_burned fields.
- Correct ChatOwner service messages schema.
- Update CHANGELOG.md and bump version to 1.2.0.
- Add comprehensive Arabic documentation in API_9.4_9.5_FEATURES.md.