Lite Writer: Написание/Заметок

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- Add doc center
- Add dialog theme
- Add text alignment
- Optimize scroller bar config
- Add copy/paste tools
- Add text history page
- Add Note feature
- Add Black/White app theme
- Optimize app day-night theme config
- Optimize editor fast scroll bar
- Support inserting image
- Support sharing text as PDF file
- Add list style for books
- Add quick TTS tool for a single paragraph
- Add delete paragraph/copy parapragph tools
- Add Text-To-Speech feature
- Improve stability