Implement AbilityManager

src/main/java/emu/grasscutter/data/custom/AbilityModifier.java

@@ -0,0 +1,36 @@
+package emu.grasscutter.data.custom;
+
+import java.util.Map;
+
+public class AbilityModifier {
+	public AbilityModifierAction[] onAdded;
+	public AbilityModifierAction[] onThinkInterval;
+	public AbilityModifierAction[] onRemoved;
+
+	public static class AbilityConfigData {
+		public AbilityData Default;
+	}
+	
+	public static class AbilityData {
+		public String abilityName;
+		public Map<String, AbilityModifier> modifiers;
+	}
+	
+	public static class AbilityModifierAction {
+		public String $type;
+		public AbilityModifierActionType type;
+		public String target;
+		public AbilityModifierValue amount;
+		public AbilityModifierValue amountByTargetCurrentHPRatio;
+	}
+	
+	public static class AbilityModifierValue {
+		public boolean isFormula;
+		public boolean isDynamic;
+		public String dynamicKey;
+	}
+	
+	public enum AbilityModifierActionType {
+		HealHP, ApplyModifier, LoseHP;
+	}
+}