Add Yazi terminal file manager to the list of software implementing kitty's graphics protocol

[sxyazi]

Please add Yazi to this page: https://sw.kovidgoyal.net/kitty/graphics-protocol/

Yazi is a "Blazing fast terminal file manager written in Rust, based on async I/O" that implements the kitty graphics protocol (both Classic and Unicode placeholders), and automatically enables it when terminal support is detected.

[kovidgoyal]

Feel free to send a PR to both graphics-protocol.rst and
integrations.rst the website is generated from these on every kitty
update.