Create Copper Backport

Adds the following blocks (can also be read from the 'block textures list.txt' file that comes with the pack):

Blocks:

• Fluid Tank
  • 1x1
  • 2x2
  • 3x3
• Steam Tank
• Steam Engine
• Fluid Pipe
• Mechanical Pump
• Spout
• Copper Valve Handle
• Fluid Valve
• Hose Pulley
• Item Drain
• Portable Fluid Interface
• Copper Casing
• Copper Ladder
• Copper Bars
• Copper Scaffolding
• Copper Shingles
• Copper Tiles
• Copper Door
• Item Drain

Items:

• Copper Nugget
• Copper Sheet
• Crushed Raw Copper

Equipment:

• Copper Diving Boots
• Copper Diving Helmet
• Copper Backtank