Support OSC8 hyperlinks

[dandavison]

Hi, thanks for skim! This feature request is analogous to junegunn/fzf#2557 and junegunn/fzf#2165. I'd like to be able to use OSC8 hyperlinks with skim, but I believe they are stripped out currently. My personal use case was going to be displaying strings with hyperlinks in the preview window. Here's an attempt at demonstrating the bug:

echo hello | sk --ansi --preview "bash -c \"printf '\e]8;;http://example.com\e\\This is a link\e]8;;\e\\\n'\""

Fwiw, I notice that skim uses the vte state machine parser, which is what delta does also. In case it's useful, here is where delta handles OSC sequences in the vte::Perform trait.

[LoricAndre]

This is a very interesting feature, thank you for the issue. However, until ratatui adds support for it (ratatui/ratatui#1028), this would require a lot of work