Further work on refactor to interface based scripts

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Sandstorm.cs

@@ -1,7 +1,7 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
 
 [Script(ScriptCategory.Weather, "sandstorm")]
-public class Sandstorm : Script
+public class Sandstorm : Script, IScriptChangeBasePower
 {
     /// <inheritdoc />
     public override void OnEndTurn(IScriptSource owner, IBattle battle)
@@ -33,7 +33,7 @@ public class Sandstorm : Script
     }
 
     /// <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)
     {
         if (move.UseMove.Name == "solar_beam")
             basePower /= 2;