Heat Bar for Metals

Allows the player to see the heat of the item without using the tooltip,
also workable, weldable and danger have there own part of the bar so you
can see the state when in the Anvil GUI Interface etc.
Heat Bar added to Soil Item

Added heat bar to soil item so that when sand is heated to make glass,
the heat bar is seen.
Create HeatItemDetails class

1. Created a new heat item details class to return the heat details of
the item stack.
2. Implemented the new class in the rendering of the HeatBar for Metals
Heat Bar added to Soil Item properly

1. Have created a proper 3D renderer for the Heat bar that can be used
for items that are rendered in 3D in the inventory.
Merge pull request #6 from Bletch1971/HeatBarMetal

Heat bar metal