Add "ZoneHold" extensions

Extensions/Cloudflare.Zones/Requests/CreateZoneHoldRequest.cs

@@ -0,0 +1,32 @@
+namespace AMWD.Net.Api.Cloudflare.Zones
+{
+	/// <summary>
+	/// Represents a request to create a zone hold.
+	/// </summary>
+	public class CreateZoneHoldRequest
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="CreateZoneHoldRequest"/> class.
+		/// </summary>
+		/// <param name="zoneId">The zone identifier.</param>
+		public CreateZoneHoldRequest(string zoneId)
+		{
+			ZoneId = zoneId;
+		}
+
+		/// <summary>
+		/// The zone identifier.
+		/// </summary>
+		public string ZoneId { get; set; }
+
+		/// <summary>
+		/// If provided, the zone hold will extend to block any subdomain of the given zone, as well as SSL4SaaS Custom Hostnames.
+		/// </summary>
+		/// <remarks>
+		/// For example, a zone hold on a zone with the hostname 'example.com' and
+		/// <c><see cref="IncludeSubdomains"/>=<see langword="true"/></c> will block
+		/// 'example.com', 'staging.example.com', 'api.staging.example.com', etc.
+		/// </remarks>
+		public bool? IncludeSubdomains { get; set; }
+	}
+}