Zero´s AdvertKit 🐸 (Billboard Script)

Changed get owner function on Entity Remove for players on disconnect, that way only advert signs get removed that got owned by a player and not world entities

1. Added CPPI in SetOwner Function
2. Fixed file.Read for Linux Systems

Added Rent feature (see config zad.config.Rentable)

Added Header "Content-Type" check to make sure we only load data that is png or jpge

Initial version.