Netcore: Align namespaces (#9801)

* Rename Umbraco.Core namespace to Umbraco.Cms.Core

* Move extension methods in core project to Umbraco.Extensions

* Move extension methods in core project to Umbraco.Extensions

* Rename Umbraco.Examine namespace to Umbraco.Cms.Examine

* Move examine extensions to Umbraco.Extensions namespace

* Reflect changed namespaces in Builder and fix unit tests

* Adjust namespace in Umbraco.ModelsBuilder.Embedded

* Adjust namespace in Umbraco.Persistence.SqlCe

* Adjust namespace in Umbraco.PublishedCache.NuCache

* Align namespaces in Umbraco.Web.BackOffice

* Align namespaces in Umbraco.Web.Common

* Ensure that SqlCeSupport is still enabled after changing the namespace

* Align namespaces in Umbraco.Web.Website

* Align namespaces in Umbraco.Web.UI.NetCore

* Align namespaces in Umbraco.Tests.Common

* Align namespaces in Umbraco.Tests.UnitTests

* Align namespaces in Umbraco.Tests.Integration

* Fix errors caused by changed namespaces

* Fix integration tests

* Undo the Umbraco.Examine.Lucene namespace change

This breaks integration tests on linux, since the namespace wont exists there because it's only used on windows.

* Fix merge

* Fix Merge

src/Umbraco.Core/Extensions/IntExtensions.cs

@@ -0,0 +1,35 @@
+// Copyright (c) Umbraco.
+// See LICENSE for more details.
+
+using System;
+
+namespace Umbraco.Extensions
+{
+    public static class IntExtensions
+    {
+        /// <summary>
+        /// Does something 'x' amount of times
+        /// </summary>
+        /// <param name="n"></param>
+        /// <param name="action"></param>
+        public static void Times(this int n, Action<int> action)
+        {
+            for (int i = 0; i < n; i++)
+            {
+                action(i);
+            }
+        }
+
+        /// <summary>
+        /// Creates a Guid based on an integer value
+        /// </summary>
+        /// <param name="value"><see cref="int"/> value to convert</param>
+        /// <returns><see cref="Guid"/></returns>
+        public static Guid ToGuid(this int value)
+        {
+            byte[] bytes = new byte[16];
+            BitConverter.GetBytes(value).CopyTo(bytes, 0);
+            return new Guid(bytes);
+        }
+    }
+}