[Feature] Kitchen Island

[AwkwardDryad]

Kitchen islands are rollable tables found in the kitchen that will allow chefs/barpeople to deliver their food/drinks to people easily!

Showcase Video: https://youtu.be/GvA1N8IkFHI

Pull Request: https://github.com/goonstation/goonstation-2020/pull/21

DMI: https://drive.google.com/open?id=19Ob_Su...Nr9Q1Ch6lt

[pali6]

Merged.