Controls if a tool can be used on this entity or not.
This hook will only work in Sandbox derived gamemodes that do not have SANDBOX:CanTool overridden.
This hook will work on ALL entities, not just the scripted ones (SENTs)
1 Player ply
Player, that tried to use the tool
3 string tool
Class of the tool that is tried to use, for example -
falseto disallow using that tool on this entity, return