Adds a bunch more move scripts

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

@@ -0,0 +1,36 @@
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.Models.Choices;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Dynamic.ScriptHandling.Registry;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "struggle")]
+public class Struggle : Script
+{
+    /// <inheritdoc />
+    public override void ChangeNumberOfHits(IMoveChoice choice, ref byte numberOfHits)
+    {
+        numberOfHits = 1;
+    }
+
+    /// <inheritdoc />
+    public override void IsInvulnerableToMove(IExecutingMove move, IPokemon target, ref bool invulnerable)
+    {
+        invulnerable = false;
+    }
+
+    /// <inheritdoc />
+    public override void ChangeEffectiveness(IExecutingMove move, IPokemon target, byte hit, ref float effectiveness)
+    {
+        effectiveness = 1;
+    }
+
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var damage = move.User.MaxHealth / 4;
+        if (damage == 0) damage = 1;
+        move.User.Damage(damage, DamageSource.Struggle, new());
+    }
+}