Switching project to C# (because why not)

OpenSaveCloudClient/Models/Remote/AccessToken.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace OpenSaveCloudClient.Models.Remote
+{
+    public class AccessToken
+    {
+        [JsonPropertyName("token")]
+        public string Token { get; set; }
+    }
+}

OpenSaveCloudClient/Models/Remote/Credential.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace OpenSaveCloudClient.Models.Remote
+{
+    public class Credential
+    {
+        [JsonPropertyName("username")]
+        public string Username { get; set; }
+        [JsonPropertyName("password")]
+        public string Password { get; set; }
+    }
+}

OpenSaveCloudClient/Models/Remote/ServerInformation.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace OpenSaveCloudClient.Models.Remote
+{
+    public class ServerInformation
+    {
+        [JsonPropertyName("allow_register")]
+        public bool AllowRegister { get; set; }
+
+        [JsonPropertyName("version")]
+        public string Version { get; set; }
+
+        [JsonPropertyName("api_version")]
+        public int ApiVersion { get; set; }
+
+        [JsonPropertyName("go_version")]
+        public string GoVersion { get; set; }
+
+        [JsonPropertyName("os_name")]
+        public string OsName { get; set; }
+
+        [JsonPropertyName("os_architecture")]
+        public string OsArchitecture { get; set; }
+    }
+}

OpenSaveCloudClient/Models/Remote/TokenValidation.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace OpenSaveCloudClient.Models.Remote
+{
+    public class TokenValidation
+    {
+
+        [JsonPropertyName("valid")]
+        public bool Valid { get; set; }
+
+    }
+}