Added crafting system

## Added craft system

**Added some items:**
 1) Refinement rock.
 2) Stick.
 3) Coal.

**Added the recipe example:**
 1) chest.prefab
 2) pickaxe.prefab
 3) plankstair.prefab (The example shows  how to use three matrices)
 4) refinementRock.prefab(The example shows how to use refinement)
 5) torch.prefab

**Added drop for the items.**

**Added some futures for the craft:**
1) Add the item or block into craft block - right click mouse. Delete - left click mouse
2) The accelerate or decelerate of the addition or removal items. In order to do that you need to keep the mouse button pressed and drag mouse up or down.
3) Fast add and delete item or block - press the key "Q" with the left or right click mouse.
4) Miniinventory(or fast inventory) - press the key "shift" and rotate mouse wheel
5) Move between the matrics of craft block - press key "shif" with right or left mouse click.

**The refinement:**
You should select the needed block in the toolbar and press the key “ E ” . Than you should select block or item which will help you to create the refinement block or the item. In the next step you should move the crosshair on the block in the craft block and press key “E”