More abilities, refactor custom triggers to be typed.

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

@@ -0,0 +1,25 @@
+using PkmnLib.Static.Moves;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Magician is an ability that steals the held item of a Pokémon it hits with a move.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Magician_(Ability)">Bulbapedia - Magician</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "magician")]
+public class Magician : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (move.UseMove.Category is MoveCategory.Status)
+            return;
+
+        if (move.User.HeldItem is not null || target.HeldItem is null)
+            return;
+
+        move.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
+        _ = move.User.SetHeldItem(target.RemoveHeldItemForBattle());
+    }
+}