More abilities, implemented support for form inheritance

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

@@ -0,0 +1,21 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Mummy is an ability that changes the attacker's ability to Mummy if it makes contact.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Mummy_(Ability)">Bulbapedia - Mummy</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "mummy")]
+public class Mummy : Script
+{
+    /// <inheritdoc />
+    public override void OnIncomingHit(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (!move.GetHitData(target, hit).IsContact || move.User.ActiveAbility?.Name == "mummy" ||
+            !move.Battle.Library.StaticLibrary.Abilities.TryGet("mummy", out var mummyAbility))
+            return;
+
+        move.Battle.EventHook.Invoke(new AbilityTriggerEvent(target));
+        move.User.ChangeAbility(mummyAbility);
+    }
+}