fix: Updates serialization to use v2.0 (#998)

- [X] Deletes serialization annotations
- [X] Updates to ModernUO.Serialization.Annotations nuget
- [X] Updates serializer to v2.0
- [X] Changes all `Serializable()` to `SerializationGenerator()`
- [X] Updates to schema generator v2.0

Projects/UOContent/Items/Addons/BaseAddonContainer.cs

@@ -1,9 +1,10 @@
 using System.Collections.Generic;
+using ModernUO.Serialization;
 using Server.Multis;
 
 namespace Server.Items
 {
-    [Serializable(2, false)]
+    [SerializationGenerator(2, false)]
     public abstract partial class BaseAddonContainer : BaseContainer, IChoppable, IAddon
     {
         [SerializableField(0, setter: "private")]