Moved PublishedCache from Umbraco.Web into .Net standard project.

Returned to compiling state with a number of things to check and some temporarily commented out functionality.

src/Umbraco.Infrastructure.PublishedCache/NuCache/DataSource/ContentData.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+
+namespace Umbraco.Web.PublishedCache.NuCache.DataSource
+{
+    // represents everything that is specific to edited or published version
+    internal class ContentData
+    {
+        public string Name { get; set; }
+        public string UrlSegment { get; set; }
+        public int VersionId { get; set; }
+        public DateTime VersionDate { get; set; }
+        public int WriterId { get; set; }
+        public int? TemplateId { get; set; }
+        public bool Published { get; set; }
+
+        public IDictionary<string, PropertyData[]> Properties { get; set; }
+
+        /// <summary>
+        /// The collection of language Id to name for the content item
+        /// </summary>
+        public IReadOnlyDictionary<string, CultureVariation> CultureInfos { get; set; }
+    }
+}