Added DamageIndicatedItemComponent and DamageIndicatedItemFluidContainer

Added a DamageIndicatedItemComponent to be used as a Component in de Composite design pattern to add a damage-bar to any desired Item. Also added a DamageIndicatedItemFluidContainer that implements this behavior.
The DamageIndicatedItemComponent is useful for items that have a damage-like behavior but don't want to use the basic damage feature, but something more complex.