fix(core): Fixes several serialization issues (#355)

- [X] Fixes an issue where a buffer smaller than 8 bytes would not double with enough space in some cases.
- [X] Fixes an issue with dupe copying the savebuffer reference (ugh).
- [X] Streamlines the IGenericWriter API to use better generics.
- [X] Streamlines the IGenericReader API to use better generics.
- [X] Forces `tidying` of a List/HashSet to be done externally since Writers/Readers should not have side effects.
- [X] Fixes an issue where Tidying a list didn't TrimExcess, causing memory leaks.
- [X] Reverted the meaning of `World.Running` to specifically refer to any world state post world loading.
  - NOTE: Do not use this if you want to block on world saves. Instead use checks against `WorldState.Saving` states.
- [X] Fixes an issue with serializing negative DateTime deltas.
- [X] Fixes a potential issue with serializing non-UTC DateTime.

Bumps release version

Projects/Server/Serialization/ISerializable.cs

@@ -13,16 +13,30 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  *************************************************************************/
 
+using System.IO;
+
 namespace Server
 {
     public interface ISerializable
     {
-        BufferWriter SaveBuffer { get; set; }
+        BufferWriter SaveBuffer { get; protected internal set; }
         int TypeRef { get; }
         Serial Serial { get; }
-        void Serialize();
         void Deserialize(IGenericReader reader);
         void Serialize(IGenericWriter writer);
         void Delete();
+        bool Deleted { get; }
+
+        public void InitializeSaveBuffer(byte[] buffer)
+        {
+            SaveBuffer = new BufferWriter(buffer, true);
+        }
+
+        public void Serialize()
+        {
+            SaveBuffer ??= new BufferWriter(true);
+            SaveBuffer.Seek(0, SeekOrigin.Begin);
+            Serialize(SaveBuffer);
+        }
     }
 }