New Map

Has a computer tile for testing
Computer tile Sprite

Added a Sprite for computers
Entity get X, Y
Consumables

Created classes to handle food and drink and made a few static "items"
in each for loading a Food/Drink menu
General Guest updates

Added food and drink selectors by passing in a menu when the guest is
sat. This allows me to have the menu change depending on the players
level and personal choices.
Also added a right click check on a table to see the elapsed time spent
at the table in Hours/Minutes and Seconds. Will adjust these later when
I determine how I want time to progress.
General Table updates

Table now has a direction of service, which will be used to determine
which side of the table a waiter must stand to interact. This will be
implemented by having the level loader check for surrounding areas to
see which side is least obstructed. For now they are hardcoded.
Waiter is now able to check when a table is ready to place an order by
scanning the floor, and moves towards the service side of the table. At
the moment this is automatic and locks the waiters movement, but will
later be recoded when I have some pathfinding enabled to create paths
around the floor.
General tidying of code

Moved some code around to keep getters/setters and game loop methods
together. Some more code edited to ensure proper inheritance and removed
some repeated code.