Most likely will be used for engineer bot nav for engihook.
Be sure to put you nav meshes into your /tf/maps/ folder.
Configs may be out of date.
git clone --recursive https://github.com/EngineerGaming69/catbot-database;cd catbot-database;sudo cp -R nav\ meshes/* ~/.steam/steam/steamapps/common/Team\ Fortress\ 2/tf/maps;sudo chmod 755 -R ~/.steam/steam/steamapps/common/Team\ Fortress\ 2/tf/maps;cd ..;sudo rm -r catbot-database
This will clone the repo, install the nav meshes, and remove the repo again.