feat: add a way to remove equipment

sonic-radiance.love/game/abstractmobs/character/equip.lua

@@ -26,6 +26,14 @@ function CharacterEquip:setEquip(category, name)
     self.stats = self:createStats()
 end
 
+function CharacterEquip:removeEquip(category)
+    if (not utils.string.isEmpty(self.equip[category])) then
+        game.loot:addItem(category, self.equip[category], 1)
+        self.equip[category] = ""
+        self.stats = self:createStats()
+    end
+end
+
 function CharacterEquip:predictStat(statName, category, name)
     local data = itemutils.getItemData(category, name)
     local boost = data.statsBoost[statName] or 0