WriteChinese - learn to write

1. Enhanced traditional Chinese support, fully covering all traditional Chinese characters 2. Added browser with automatic Pinyin annotation for opened web pages 3. New file management feature for easy organization of writing materials 4. Support offline text recognition for writing practice 5. Dictionary now supports both Chinese and English display 6. Added to-do list and timer functions to assist time management 7. Supplemented default practice characters; beginners can practice without inputting Chinese characters 8. Optimized user experience, supporting iOS 15 and above