Implements a bunch more moves

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Switcheroo.cs

@@ -0,0 +1,24 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "switcheroo")]
+public class Switcheroo : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var targetHeldItem = target.HeldItem;
+        var userHeldItem = move.User.HeldItem;
+        if (targetHeldItem?.Category is ItemCategory.FormChanger or ItemCategory.Mail ||
+            userHeldItem?.Category is ItemCategory.FormChanger or ItemCategory.Mail)
+        {
+            // Cannot switch items if one of them is a form changer or mail
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        targetHeldItem = target.RemoveHeldItem();
+        userHeldItem = move.User.RemoveHeldItem();
+
+        _ = target.SetHeldItem(userHeldItem);
+        _ = move.User.SetHeldItem(targetHeldItem);
+    }
+}