FEATURE: Horizontal preview scroll

[Heck-R]

Checklist

• I have read through the manual page (man fzf)
• I have searched through the existing issues
• For bug reports, I have checked if the bug is reproducible in the latest version of fzf

Output of fzf --version

0.73.0 (a24deef)

OS

• Linux
• macOS
• Windows
• Etc.

Shell

• bash
• zsh
• fish

Problem / Steps to reproduce

On top of the existing vertical scrolling in previews, having horizontal scrolling would be very nice.

I preview arbitrary file content in the preview in multiple use cases (it's also a thing in the commonly suggested fzf-ripgrep combination), and while it is technically possible to see everything with wrap on, the content can be such that it becomes very hard to comprehend with wrap.

I personally mainly wish for the horizontal scroll actions similar to preview-scroll-up and preview-scroll-down (so e.g.: preview-scroll-left and preview-scroll-right), but of course, if the cursor scrolling (with the click + drag and/or shift + scroll) is available by default to complete the existing cursor interactions, that would also be greatly appreciated