First couple abilities implemented

Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/BattleBond.cs

@@ -0,0 +1,32 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+[Script(ScriptCategory.Ability, "battle_bond")]
+public class BattleBond : Script
+{
+    /// <inheritdoc />
+    public override void OnOpponentFaints(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (move.User.Species.Name == "greninja" && move.User.Form.Name != "ash" &&
+            move.User.Species.TryGetForm("ash", out var ashForm))
+        {
+            move.User.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
+            move.User.ChangeForm(ashForm);
+        }
+    }
+
+    /// <inheritdoc />
+    public override void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref ushort basePower)
+    {
+        if (move.UseMove.Name == "water_shuriken" && move.User.Form.Name == "ash")
+            basePower = 20;
+    }
+
+    /// <inheritdoc />
+    public override void ChangeNumberOfHits(IMoveChoice choice, ref byte numberOfHits)
+    {
+        if (choice.ChosenMove.MoveData.Name == "water_shuriken" && choice.User.Form.Name == "ash")
+        {
+            numberOfHits = 3;
+        }
+    }
+}