retext from home:kimi:retext project

For xUbuntu 24.04 run the following:

Keep in mind that the owner of the key may distribute updates, packages and repositories that your system will trust (more information).

echo 'deb http://download.opensuse.org/repositories/home:/kimi:/retext/xUbuntu_24.04/ /' | sudo tee /etc/apt/sources.list.d/home:kimi:retext.list
curl -fsSL https://download.opensuse.org/repositories/home:kimi:retext/xUbuntu_24.04/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/home_kimi_retext.gpg > /dev/null
sudo apt update
sudo apt install retext