Feature: Add URL sort

[Zweih]

Users can now sort by URL with qp order url, qp order url:asc, or qp order url:desc.

Example:

> qp s name,url o url
NAME              URL
flac              https://xiph.org/flac/
libxkbcommon-x11  https://xkbcommon.org/
libxkbcommon      https://xkbcommon.org/
libxi             https://xorg.freedesktop.org
libxxf86vm        https://xorg.freedesktop.org/
libxt             https://xorg.freedesktop.org/
libxv             https://xorg.freedesktop.org/
libxcomposite     https://xorg.freedesktop.org/
libxinerama       https://xorg.freedesktop.org/
libxft            https://xorg.freedesktop.org/
libxfixes         https://xorg.freedesktop.org/
libxdamage        https://xorg.freedesktop.org/
libxau            https://xorg.freedesktop.org/
libxrandr         https://xorg.freedesktop.org/
libice            https://xorg.freedesktop.org/
libxrender        https://xorg.freedesktop.org/
libxshmfence      https://xorg.freedesktop.org/
libsm             https://xorg.freedesktop.org/
xorgproto         https://xorg.freedesktop.org/
zellij            https://zellij.dev

Closes #258