Refactor move classes to implement respective interfaces for better structure

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

@@ -3,10 +3,10 @@ using PkmnLib.Static.Moves;
 namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
 
 [Script(ScriptCategory.Move, "metal_burst")]
-public class MetalBurst : Script
+public class MetalBurst : Script, IScriptOnBeforeTurnStart
 {
     /// <inheritdoc />
-    public override void OnBeforeTurnStart(ITurnChoice choice)
+    public void OnBeforeTurnStart(ITurnChoice choice)
     {
         choice.User.Volatile.Add(new MetalBurstHelper());
     }