Move core to external libs, Starting terminal crossplatform client

OpenSaveCloudCore/Models/Remote/GameUploadToken.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace OpenSaveCloudCore.Models.Remote
+{
+    public class GameUploadToken
+    {
+        [JsonPropertyName("upload_token")]
+        public string UploadToken { get; set; }
+        [JsonPropertyName("expire")]
+        public string Expire { get; set; }
+
+    }
+}