Further work on refactor to interface based scripts

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Payback.cs

@@ -4,10 +4,10 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
 /// Implements the secondary effect of Payback, which doubles the move's power if the user moves after the target.
 /// </summary>
 [Script(ScriptCategory.Move, "payback")]
-public class Payback : Script
+public class Payback : Script, IScriptChangeBasePower
 {
     /// <inheritdoc />
-    public override void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref ushort basePower)
+    public void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref ushort basePower)
     {
         var battleData = move.User.BattleData;