Update library to support Telegram Bot API 9.3
- Implemented all new entities and methods from API 7.4 through 9.3.
- Added support for forum topics in private chats.
- Added sendMessageDraft for partial message streaming.
- Enhanced Gifts support with Unique Gifts, colors, and blockchain info.
- Full support for managed business accounts (stories, checklists, profile settings).
- Complete Telegram Stars support (transactions, subscriptions, affiliate programs).
- Support for channel direct messages and suggested posts.
- Removed deprecated and replaced fields as per API 9.3 specifications.
- Added comprehensive unit tests for new features.
- Added API_9.3_FEATURES.md documentation in Arabic.