StarNote: Handwriting & PDF

- Add scribble erase (enabled in the eraser tool); - Add audio file import and export, adjust the duration of a single recording to 120 minutes; - Support apple pencil to slide and flip pages in the blank space outside the page; - Optimize graphic filling to follow stroke colors; - Optimize the recognition rate of one-stroke shaping for some graphics; - Fixed the issue of incorrect template size when exporting infinite notes as images; - Fixed the issue of text underline not being saved in the text box; - Fixed some UI issues.