Image Previewer

Tested full 1.21.11 support Desync fixes

Full Changelog: https://github.com/HaHaWTH/ImagePreviewer/compare/1.2.2...2.0.0

Version 1.2.2 is released! Heres the changelog:

1. Add config option for preview size
2. Add /preview history [size] to customize the limit
3. Code cleanup
4. Add time for preview history entry

Version 1.2.1 is released! Heres the changelog:

1. Fix potential performance problem when previewing large GIFs
2. Downgrade Java version requirement to 17 or higher

Version 1.2 is released! Heres the changelog:

1. Fix GIFs loading
2. Move task to dedicated thread
3. Add /preview history command
4. Add floodgate hook
5. Add tab complete
6. Performance improvement