XR's Tiny Edits

Changelog:

• Updated to 1.21.9 to 1.21.10
• Updated Pack Format to use the new format style
• Added new Copper Bars textures
• Added new Copper Lantern textures
• Added new Copper Tools textures
• Added new Copper Armour textures (model and items)
• Added new Iron Block texture to match Iron Bars
• Added new Iron Door and Trapdoor textures
• Updated Blackstone textures (polished, chiseled, and bricks)