Implement hopper filter methods for Mesh

[SimonMeskens]

//------------- Hopper Filtering Functionality -----------//
    
protected int filterablePropertiesBitfield = 0;

public boolean canItemPassIfFilter(ItemStack filteredItem)
{
 return true;
}

public int getFilterableProperties(ItemStack stack)
{
 return filterablePropertiesBitfield;
}

public Item setFilterableProperties(int iProperties)
{
    filterablePropertiesBitfield = iProperties;
 
 return this;
}