More abilities, refactor IPokemon.SetStatus to pass pokemon that caused the status change

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

@@ -0,0 +1,19 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Sturdy is an ability that allows the Pokémon to survive a one-hit KO attack with 1 HP.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Sturdy_(Ability)">Bulbapedia - Sturdy</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "sturdy")]
+public class Sturdy : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingMoveDamage(IExecutingMove move, IPokemon target, byte hit, ref uint damage)
+    {
+        if (damage >= target.MaxHealth && target.CurrentHealth == target.MaxHealth)
+        {
+            damage = target.MaxHealth - 1;
+        }
+    }
+}