EasyViewer-PDF,epub,heic,Tiff

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- epub improvements
Fix table of contents logic
Fix exception handling
- Fix compressed file name case-sensitive handling bug
- Fix file case handling bug (Thanks to Horomai 88)
- Improved image viewer
Add horizontal scroll mode (Thanks to inease)
- Fix TTS timer
Fix next chapter opening error (Thanks to vellore Ganimid)
Fix timer bug (Thanks to Stephen Ahn)