Simple Copper Armor and Tools

Adds balanced copper tools, armor, and horse armor to Minecraft! These items are intended to be a "heavier" substitute for stone/chainmail gear. The armor (which is trimmable) is slightly better than chainmail, while the tools have a slower swing rate but deal more damage than their stone counterparts. The copper horse armor is not craftable, however, can be found in certain structure chests.  # [Also see Simple Emerald Armor and Tools](https://modrinth.com/mod/simple-emerald-armor-and-tools)