More work on refactor to interfaces

Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/EchoedVoiceData.cs

@@ -4,10 +4,10 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Side;
 /// Just here to indicate that a Pokemon on this side has used Echoed Voice.
 /// </summary>
 [Script(ScriptCategory.Side, "echoed_voice_data")]
-public class EchoedVoiceData : Script
+public class EchoedVoiceData : Script, IScriptOnEndTurn
 {
     /// <inheritdoc />
-    public override void OnEndTurn(IScriptSource owner, IBattle battle)
+    public void OnEndTurn(IScriptSource owner, IBattle battle)
     {
         RemoveSelf();
     }