introduce a very simple Nextcloud API

Pilz.Networking.CloudProviders.Nextcloud/OCS/OcsApiUrlPath.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Pilz.Networking.CloudProviders.Nextcloud.OCS
+{
+    public readonly struct OcsApiUrlPath
+    {
+        private readonly string path;
+
+        public OcsApiUrlPath()
+        {
+            path = string.Empty;
+        }
+
+        public OcsApiUrlPath(string path)
+        {
+            this.path = path;
+        }
+
+        public static implicit operator string(OcsApiUrlPath o) => o.path;
+        public static implicit operator OcsApiUrlPath(string o) => new(o);
+
+        public override readonly string ToString()
+        {
+            return path;
+        }
+    }
+}