fix(core): Fixes map issues at New Haven (#509)

- [X] Fixes map issues at New Haven by turning off static diffs
- [X] Some code cleanup and reformatting of tile matrix, tile matrix patch, and tile data
- [X] Adds NetState.Flush for generating spawners so it doesn't feel like the server is frozen
- [X] Reverts NativeReader changes from a while back.
- [X] Adds more string reading for BufferReader.


Notes:
BufferReader is still `little endian` compared to `SpanReader` which is `big endian` (for packets). To that end, the RunUO deserialization `ReadString()` was made obsolete since it is ambiguous, and contains extra fields other than simply reading a string. Furthermore, we shouldn't be using UTF8 (for now) since it is slow.

Projects/Server/Network/Packets/IncomingTargetingPackets.cs

@@ -13,6 +13,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  *************************************************************************/
 
+using System;
 using Server.Diagnostics;
 using Server.Targeting;
 
@@ -33,7 +34,8 @@ namespace Server.Network
             Serial serial = reader.ReadUInt32();
             int x = reader.ReadInt16();
             int y = reader.ReadInt16();
-            int z = reader.ReadInt16();
+            reader.ReadByte();
+            int z = reader.ReadSByte();
             int graphic = reader.ReadUInt16();
 
             if (targetID == unchecked((int)0xDEADBEEF))