Rappenem's Reforge

New Reforges:

• Copper helmet, chestplate, leggings and boots items
• Copper armor model
• Hotbar sprite and it's components (right/left offhand and selection)
• Experience meter
• All mob/potion effect icons
• All 18 model trims
• Trim color pallettes
• Armor item trim textures

Hotfixes:

• Made some slight changes to the heart/armor GUI to make them look more balanced in-game (messed around with the hue/saturation levels since some of the sprites were too light)
• Changed the light direction on some of the sword sprites to match the rest of the tools/items
• Moved the helmet model up by 1 pixel so stop the player's head from showing when a skin includes the hat layer --> also fixes a problem with the same thing happening to armor stands in 1.21.8