These are the core mods that are shipped with the TF|2 Icepick. Icepick.Framework is the collection of scripts that allow the game to function as a sandbox environment. Wilko.CustomGauntlets adds tools and options that let players create and race their own gauntlets ingame.
You will need the TF|2 Icepick downloaded.
Place the folders in data/mods, overwriting the existing folders and files. Or git checkout to the mods folder.