Changed folder structure, added explicit nullable for extensions.

Extensions/Cloudflare.Zones/Enums/ZoneMode.cs

@@ -0,0 +1,30 @@
+using System.Runtime.Serialization;
+using Newtonsoft.Json.Converters;
+
+namespace AMWD.Net.Api.Cloudflare.Zones
+{
+	/// <summary>
+	/// Zone modes.
+	/// </summary>
+	[JsonConverter(typeof(StringEnumConverter))]
+	public enum ZoneMode
+	{
+		/// <summary>
+		/// Standard.
+		/// </summary>
+		[EnumMember(Value = "standard")]
+		Standard = 1,
+
+		/// <summary>
+		/// Only as CDN.
+		/// </summary>
+		[EnumMember(Value = "cdn_only")]
+		CdnOnly = 2,
+
+		/// <summary>
+		/// Only as DNS.
+		/// </summary>
+		[EnumMember(Value = "dns_only")]
+		DnsOnly = 3,
+	}
+}