Fix download/upload timeout + Fix some warnings

OpenSaveCloudClient/Models/Configuration.cs

@@ -7,24 +7,27 @@ using System.Text.Json;
 
 namespace OpenSaveCloudClient.Models
 {
-    public class Configuration
+    public class UserConfiguration
     {
-        private static Configuration? instance;
+        private static UserConfiguration? instance;
         private Dictionary<string, string> _values;
 
-        private Configuration()
+        private UserConfiguration()
         {
             _values = new Dictionary<string, string>();
             Load();
         }
 
-        public static Configuration GetInstance()
+        public static UserConfiguration Instance
         {
-            if (instance == null)
+            get
             {
-                instance = new Configuration();
+                if (instance == null)
+                {
+                    instance = new UserConfiguration();
+                }
+                return instance;
             }
-            return instance;
         }
 
         private void Load()