Hyperlink support

[uttarayan21]

Implemented support for parsing hyperlinks directly.
Now the parsers return HyperlinkedText instead of Text.
The HyperlinkedText is rendered using the same method used in
https://github.com/JayanAXHF/gitv/tree/main/crates/hyperrat

Also I've cleaned up the text and text_fast and merged them into one since they were already basically the same. But previously we didn't have any methods to convert Text<'a> to Text<'static> which I've added in the new HyperlinkedText struct.

The examples/hyperlinks.rs was generated using AI which I've verified works inside kitty.

Also ran updated flake inputs to latest.

[uttarayan21]

Fixes #82

[orhun]

Just tested the example code and works really nice!

I'm not sure if I will have the capacity to review all this but definitely looking forward 🐀 🧀

[uttarayan21]

The thing is I'm not sure if all the hyperlink stuff makes sense in this crate directly.
Maybe splitting into a ratatui-hyperlink makes sense ? And then use that to return ratatui_hyperlink::HyperlinkedText

from the for now we can ship a rc.1 with all this embedded and maybe later publish a crate called ratatui-hyperlink ?

[orhun]

Makes sense to me!

[uttarayan21]

Just documenting things. Don't mind this comment.

Using the following code gives around a 21% perf regression compared to using an if-else

hyperlink_span.or(text_span).parse(s)

Whereas using the simple if-else yields back the performance compared to the .or method.

if let Some((s, h)) = hyperlink_span.parse(s).ok() {
    Ok((s, h))
} else {
    let (s, _) = cond(style.is_none(), opt(any_escape_sequence)).parse(s)?;
    text_span.parse(s)
}

overall performance regression compared to master
not noticeable in larger code example