More abilities, refactor stealing held items

Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Steelworker.cs

@@ -0,0 +1,20 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Steelworker is an ability that boosts the power of Steel-type moves.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Steelworker_(Ability)">Bulbapedia - Steelworker</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "steelworker")]
+public class Steelworker : Script
+{
+    /// <inheritdoc />
+    public override void ChangeOffensiveStatValue(IExecutingMove move, IPokemon target, byte hit, uint defensiveStat,
+        ImmutableStatisticSet<uint> targetStats, Statistic stat, ref uint value)
+    {
+        if (move.GetHitData(target, hit).Type?.Name == "steel")
+        {
+            value = value.MultiplyOrMax(1.5f);
+        }
+    }
+}