Implements an initial version of Baton Pass.

Will probably need some additional work in the future.

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

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+using System;
+using System.Linq;
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Dynamic.ScriptHandling.Registry;
+using PkmnLib.Static;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "baton_pass")]
+public class BatonPass : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var user = move.User;
+        var additionalData = move.MoveChoice.AdditionalData;
+        if (additionalData == null)
+            return;
+        if (additionalData["to_switch"] is not IPokemon toSwitch)
+            return;
+        var battleData = user.BattleData;
+        if (battleData == null)
+            return;
+        
+        var statBoosts = user.StatBoost;
+        var volatileScripts = user.Volatile.Select(x => x.Script).WhereNotNull().ToList();
+        foreach (var container in user.Volatile)
+        {
+            container.ClearWithoutRemoving();
+        }
+        
+        var side = battleData.Battle.Sides[battleData.SideIndex];
+        side.SwapPokemon(battleData.Position, toSwitch);
+
+        foreach (Statistic stat in Enum.GetValues(typeof(Statistic)))
+        {
+            toSwitch.StatBoost.SetStatistic(stat, statBoosts.GetStatistic(stat));
+        }
+        toSwitch.RecalculateBoostedStats();
+        
+        foreach (var script in volatileScripts)
+        {
+            toSwitch.Volatile.Add(script);
+        }
+    }
+}