Add project files.

Utils/Deserialization.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace SPWorldsApi.Utils
+{
+    internal static class Deserialization
+    {
+        public static TClass Deserialize<TClass>(this string body) where TClass : class
+        {
+            TClass? objectToReturn = JsonSerializer.Deserialize<TClass>(body);
+            if (objectToReturn == null)
+                throw new Exception($"Error with deserializing object");
+            else
+                return objectToReturn;
+        }
+    }
+}