Iron & Steel

Added:

-Gold Alloy(alloy of copper and gold[18k])

-Gold alloy tools and armor

-2 new templetes used for beacon pouches

-netherite beacon pouches

-charged netherite beacon pouches

-copper crates

Experimental additions:

-gilded netherite

Trimming:

added steel, copper types as trimming materials

add steel and gold alloy to the trimmable_armor tag

Other Changes:

steel and gold alloy blocks can be used for beacons