Add all missing docs

PkmnLib.Dynamic/ScriptHandling/ItemScript.cs

@@ -4,13 +4,20 @@ using PkmnLib.Static.Utils;
 
 namespace PkmnLib.Dynamic.ScriptHandling;
 
+/// <summary>
+/// Base class for item scripts.
+/// </summary>
 public abstract class ItemScript : IDeepCloneable
 {
+    /// <inheritdoc cref="ItemScript"/>
     protected ItemScript(IItem item)
     {
         Item = item;
     }
 
+    /// <summary>
+    /// The item associated with this script.
+    /// </summary>
     protected IItem Item { get; private set; }
 
     /// <summary>