fix(core): Converts more packets and switches to Moq (#415)

- [X] Switches testing to moq for mocking
- [X] Converts race changer packets
- [X] Renames some more folders and misc cleanup

Projects/UOContent/Engines/MLQuests/Items/TaintedTreeSample.cs

@@ -1,40 +0,0 @@
-namespace Server.Items
-{
-    public class TaintedTreeSample : Item // On OSI the base class is Kindling, and it's ignitable...
-    {
-        [Constructible]
-        public TaintedTreeSample() : base(0xDE2)
-        {
-            LootType = LootType.Blessed;
-            Hue = 0x9D;
-        }
-
-        public TaintedTreeSample(Serial serial) : base(serial)
-        {
-        }
-
-        public override int LabelNumber => 1074997; // Tainted Tree Sample
-
-        public override bool Nontransferable => true;
-
-        public override void AddNameProperties(ObjectPropertyList list)
-        {
-            base.AddNameProperties(list);
-            AddQuestItemProperty(list);
-        }
-
-        public override void Serialize(IGenericWriter writer)
-        {
-            base.Serialize(writer);
-
-            writer.Write(0); // Version
-        }
-
-        public override void Deserialize(IGenericReader reader)
-        {
-            base.Deserialize(reader);
-
-            var version = reader.ReadInt();
-        }
-    }
-}