introduce a very simple Nextcloud API

Pilz.Networking.CloudProviders.Nextcloud/Model/NextcloudLogin.cs

@@ -0,0 +1,39 @@
+using Newtonsoft.Json;
+using Pilz.Networking.CloudProviders.Nextcloud.OCS.Responses.LoginFlowV2;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Pilz.Networking.CloudProviders.Nextcloud.Model
+{
+    public class NextcloudLogin
+    {
+        /// <summary>
+        /// The server url the login credentials are for.
+        /// </summary>
+        public string? Server { get; set; }
+
+        /// <summary>
+        /// The login name (username or password) used for the login.
+        /// </summary>
+        public string? LoginName { get; set; }
+
+        /// <summary>
+        /// The app password that has been generated.
+        /// </summary>
+        public string? AppPassword { get; set; }
+
+        public NextcloudLogin()
+        {
+        }
+
+        public NextcloudLogin(OcsResponseLoginFlowV2Credentials response)
+        {
+            Server = response.Server;
+            LoginName = response.LoginName;
+            AppPassword = response.AppPassword;
+        }
+    }
+}