Food code update

Moved functional food code to a "/World/" script, the update timer for
player hunger remains in the "/Char/" folder as food items are world
elements not player elements.

Lowered food values for all food items.

Added two new items as food items, the bottle and can.

Re-updated weapon ammo data (it somehow didn't save on the last commit,
see last commit notes for more information)

Lowered spawn rates for all food items, drink bottle remains the same
and the can is added to the loot index.

Fixed some bugs with the bottle drink code, updated it to support the
new drink item callback.

Added "/World/Food.pwn" script that contains all the code relating to
food items.

Added another parameter to "DefineFoodItem" which determines the
"consume type". Current types are eat (0) and drink (1), drink types
won't display an action bar UI element or require holding the interact
key.

Added "/Items/candrink.pwn" file to control drinks can usage, currently
just a copy of the bottle code, but will soon contain different types of
drink than the bottle and maybe different food values (which would mean
the default for the can item would have to be set to 0.0)