Resolve action download info (#515)

src/Sdk/DTWebApi/WebApi/ActionDownloadInfo.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace GitHub.DistributedTask.WebApi
+{
+    [DataContract]
+    public class ActionDownloadInfo
+    {
+        [DataMember(EmitDefaultValue = false)]
+        public ActionDownloadAuthentication Authentication { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string NameWithOwner { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string ResolvedNameWithOwner { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string ResolvedSha { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string TarballUrl { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string Ref { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string ZipballUrl { get; set; }
+    }
+
+    [DataContract]
+    public class ActionDownloadAuthentication
+    {
+        [DataMember(EmitDefaultValue = false)]
+        public DateTime ExpiresAt { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string Token { get; set; }
+    }
+}