More work on refactor to interfaces

Plugins/PkmnLib.Plugin.Gen7/Scripts/Status/Poisoned.cs

@@ -1,7 +1,7 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Status;
 
 [Script(ScriptCategory.Status, "poisoned")]
-public class Poisoned : Script
+public class Poisoned : Script, IScriptOnEndTurn
 {
     private IPokemon? _pokemon;
 
@@ -16,7 +16,7 @@ public class Poisoned : Script
     public virtual float GetPoisonMultiplier() => 1f / 8f;
 
     /// <inheritdoc />
-    public override void OnEndTurn(IScriptSource owner, IBattle battle)
+    public void OnEndTurn(IScriptSource owner, IBattle battle)
     {
         if (_pokemon == null)
             return;