fix(core): Updates to serialization (#590)

- [X] Adds `AdhocPersistence` which replaces RunUO `Persistence`
- [X] Fixes a few minor bugs with EntityPersistence deserialization
- [X] Reverts/updates some serialization changes

Projects/Server/Serialization/AdhocPersistence.cs

@@ -0,0 +1,59 @@
+/*************************************************************************
+ * ModernUO                                                              *
+ * Copyright 2019-2021 - ModernUO Development Team                       *
+ * Email: hi@modernuo.com                                                *
+ * File: AdhocPersistence.cs                                             *
+ *                                                                       *
+ * This program is free software: you can redistribute it and/or modify  *
+ * it under the terms of the GNU General Public License as published by  *
+ * the Free Software Foundation, either version 3 of the License, or     *
+ * (at your option) any later version.                                   *
+ *                                                                       *
+ * You should have received a copy of the GNU General Public License     *
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+using System;
+using System.IO;
+
+namespace Server
+{
+    public static class AdhocPersistence
+    {
+        public static void Serialize(string filePath, Action<IGenericWriter> serializer)
+        {
+            var fullPath = Path.Combine(Core.BaseDirectory, filePath);
+            var file = new FileInfo(fullPath);
+            file.Directory?.Create();
+
+            using var bin = new BinaryFileWriter(fullPath, true);
+            serializer(bin);
+        }
+
+        public static void Deserialize(string filePath, Action<IGenericReader> deserializer)
+        {
+            var fullPath = Path.Combine(Core.BaseDirectory, filePath);
+            var file = new FileInfo(fullPath);
+            file.Directory?.Create();
+
+            if (!file.Exists)
+            {
+                return;
+            }
+
+            try
+            {
+                using FileStream fs = new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read);
+                using var br = new BinaryFileReader(fs);
+                deserializer(br);
+            }
+            catch (Exception e)
+            {
+                Utility.PushColor(ConsoleColor.Red);
+                Console.WriteLine($"***** Bad deserialize of {file.FullName} *****");
+                Console.WriteLine(e.ToString());
+                Utility.PopColor();
+            }
+        }
+    }
+}