fix: Converts ethics system to generic entity persistence (#1824)

### Summary

Converts ethics system to entity persistence and removes the persistence item.


### TODO

1. The enable/disable toggle doesn't propagate to all code that does Ethics checks (notoriety, pvp, etc).
2. We need commands to remove them from an ethic.

Projects/UOContent/Engines/Ethics/Core/EthicsEntity.cs

@@ -0,0 +1,26 @@
+using System;
+using ModernUO.Serialization;
+
+namespace Server.Ethics;
+
+[SerializationGenerator(0)]
+public partial class EthicsEntity : ISerializable
+{
+    public EthicsEntity()
+    {
+        Serial = EthicsSystem.NewProfile;
+        EthicsSystem.Add(this);
+    }
+
+    public DateTime Created { get; set; } = Core.Now;
+
+    public Serial Serial { get; }
+
+    public bool Deleted { get; private set; }
+
+    public void Delete()
+    {
+        Deleted = true;
+        EthicsSystem.Remove(this);
+    }
+}