Further work on refactor to interface based scripts

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

@@ -1,10 +1,10 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
 
 [Script(ScriptCategory.Move, "grass_knot")]
-public class GrassKnot : Script
+public class GrassKnot : 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 targetWeight = target.WeightInKg;
         basePower = targetWeight switch