More abilities, refactor custom triggers to be typed.

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

@@ -0,0 +1,24 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Magnet Pull is an ability that prevents Steel-type Pokémon from fleeing or switching out.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Magnet_Pull_(Ability)">Bulbapedia - Magnet Pull</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "magnet_pull")]
+public class MagnetPull : Script
+{
+    /// <inheritdoc />
+    public override void PreventOpponentRunAway(IFleeChoice choice, ref bool prevent)
+    {
+        if (choice.User.Types.Any(x => x.Name == "steel"))
+            prevent = true;
+    }
+
+    /// <inheritdoc />
+    public override void PreventOpponentSwitch(ISwitchChoice choice, ref bool prevent)
+    {
+        if (choice.User.Types.Any(x => x.Name == "steel"))
+            prevent = true;
+    }
+}