Refactor move classes to implement respective interfaces for better structure

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

@@ -1,9 +1,9 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
 
 [Script(ScriptCategory.Move, "2_hit_move")]
-public class DoubleHitMove : Script
+public class DoubleHitMove : Script, IScriptChangeNumberOfHits
 {
-    public override void ChangeNumberOfHits(IMoveChoice choice, ref byte numberOfHits)
+    public void ChangeNumberOfHits(IMoveChoice choice, ref byte numberOfHits)
     {
         numberOfHits = 2;
     }