Add TimeSettings (Start, End and TTL) (#661)

* time

* .

* UT

* using JetBrains.Annotations;

src/WireMock.Net.Abstractions/Admin/Mappings/MappingModel.cs

@@ -1,4 +1,5 @@
-using System;
+using System;
+using WireMock.Models;
 
 namespace WireMock.Admin.Mappings
 {
@@ -13,6 +14,11 @@ namespace WireMock.Admin.Mappings
         /// </summary>
         public Guid? Guid { get; set; }
 
+        /// <summary>
+        /// Gets or sets the TimeSettings when which this mapping should be used.
+        /// </summary>
+        public TimeSettingsModel TimeSettings { get; set; }
+
         /// <summary>
         /// The unique title.
         /// </summary>

src/WireMock.Net.Abstractions/Admin/Mappings/TimeSettingsModel.cs

@@ -0,0 +1,26 @@
+using System;
+
+namespace WireMock.Models
+{
+    /// <summary>
+    /// TimeSettingsModel: Start, End and TTL
+    /// </summary>
+    [FluentBuilder.AutoGenerateBuilder]
+    public class TimeSettingsModel
+    {
+        /// <summary>
+        /// Gets or sets the DateTime from which this mapping should be used. In case this is not defined, it's used (default behavior).
+        /// </summary>
+        public DateTime? Start { get; set; }
+
+        /// <summary>
+        /// Gets or sets the DateTime from until this mapping should be used. In case this is not defined, it's used forever (default behavior).
+        /// </summary>
+        public DateTime? End { get; set; }
+
+        /// <summary>
+        /// Gets or sets the TTL (Time To Live) in seconds for this mapping. In case this is not defined, it's used (default behavior).
+        /// </summary>
+        public int? TTL { get; set; }
+    }
+}

src/WireMock.Net.Abstractions/Models/ITimeSettings.cs

@@ -0,0 +1,25 @@
+using System;
+
+namespace WireMock.Models
+{
+    /// <summary>
+    /// TimeSettings: Start, End and TTL
+    /// </summary>
+    public interface ITimeSettings
+    {
+        /// <summary>
+        /// Gets or sets the DateTime from which this mapping should be used. In case this is not defined, it's used (default behavior).
+        /// </summary>
+        DateTime? Start { get; set; }
+
+        /// <summary>
+        /// Gets or sets the DateTime from until this mapping should be used. In case this is not defined, it's used forever (default behavior).
+        /// </summary>
+        DateTime? End { get; set; }
+
+        /// <summary>
+        /// Gets or sets the TTL (Time To Live) in seconds for this mapping. In case this is not defined, it's used (default behavior).
+        /// </summary>
+        int? TTL { get; set; }
+    }
+}