[BREAKING] Item Usage Overhaul

-De-hardcode elemental orb values
-De-hardcode exp items
-Change ShopChest format (temporary, drop system overhaul will replace it entirely)
-Food healing actually uses Ability data for real HP amounts

src/main/java/emu/grasscutter/game/props/ItemUseAction/ItemUseInt.java

@@ -0,0 +1,13 @@
+package emu.grasscutter.game.props.ItemUseAction;
+
+import lombok.Getter;
+
+public abstract class ItemUseInt extends ItemUseAction {
+    @Getter protected int i = 0;
+
+    public ItemUseInt(String[] useParam) {
+        try {
+            this.i = Integer.parseInt(useParam[0]);
+        } catch (NumberFormatException ignored) {}
+    }
+}