fix: Fixes dupe property copying. Adds IgnoreDupe (#1811)

## Summary

### Changes
- Adds `[IgnoreDupe]` and `[SerializedIgnoreDupe]`
- Updates all _known_ classes that need the attribute. Some might be missing, please helps us find them!
- Adds `Item.Dupe()` command and encapsulates `CopyProperties` and `OnAfterDuped`. This is also overridable.
- Updates Dupe command to use the new logic.
- Fixes duping multiple kinds of objects that used to be outright broken.

### Bug Fixes
- Fixes issue with durability after duping
- Fixes issue with hue after duping

> [!Note]
> **Developer Note**
> Customizing how duping an item works now requires two steps:
> 1. Add `[IgnoreDupe]` or `[SerializedIgnoreDupe]` to the property/field
> 2. Add custom logic in an `OnAfterDuped` override
>
> When do you need to do this?
> *When the property being copied is not a primitive, and you need to manually deep-clone the contents of the property such as with Lists, Dictionaries, or sub classes.*

Projects/UOContent/Items/Misc/PlayerBulletinBoards.cs

@@ -31,6 +31,7 @@ public partial class PlayerBBEast : BasePlayerBB
 [SerializationGenerator(0, false)]
 public abstract partial class BasePlayerBB : Item, ISecurable
 {
+    [SerializedIgnoreDupe]
     [SerializableField(0)]
     [SerializedCommandProperty(AccessLevel.GameMaster)]
     private SecureLevel _level;
@@ -40,10 +41,12 @@ public abstract partial class BasePlayerBB : Item, ISecurable
     private string _title;
 
     [CanBeNull]
+    [SerializedIgnoreDupe]
     [SerializableField(2)]
     [SerializedCommandProperty(AccessLevel.GameMaster)]
     private PlayerBBMessage _greeting;
 
+    [SerializedIgnoreDupe]
     [SerializableField(3)]
     private List<PlayerBBMessage> _messages;
 
@@ -53,6 +56,25 @@ public abstract partial class BasePlayerBB : Item, ISecurable
         _level = SecureLevel.Anyone;
     }
 
+    public override void OnAfterDuped(Item newItem)
+    {
+        if (newItem is not BasePlayerBB board)
+        {
+            return;
+        }
+
+        if (_greeting != null)
+        {
+            board.Greeting = new PlayerBBMessage(_greeting.Time, _greeting.Poster, _greeting.Message);
+        }
+
+        for (var i = 0; i < _messages.Count; i++)
+        {
+            var message = _messages[i];
+            board.AddToMessages(new PlayerBBMessage(message.Time, message.Poster, message.Message));
+        }
+    }
+
     public override void GetContextMenuEntries(Mobile from, List<ContextMenuEntry> list)
     {
         base.GetContextMenuEntries(from, list);