Create WixToolset.Heat.nupkg to distribute heat.exe and Heat targets

Moves Heat functionality to the "tools" layer and packages it all
up in WixToolset.Heat.nupkg for distribution in WiX v4.

Completes 6838

1 files changed, 26 insertions, 0 deletions

diff --git a/src/tools/heat/Extensibility/BaseHarvesterExtension.cs b/src/tools/heat/Extensibility/BaseHarvesterExtension.cs
new file mode 100644
index 00000000..02696d5b
--- /dev/null
+++ b/src/tools/heat/Extensibility/BaseHarvesterExtension.cs
@@ -0,0 +1,26 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Harvesters.Extensibility
+{
+    using Wix = WixToolset.Harvesters.Serialize;
+
+    /// <summary>
+    /// The base harvester extension.  Any of these methods can be overridden to change
+    /// the behavior of the harvester.
+    /// </summary>
+    public abstract class BaseHarvesterExtension : IHarvesterExtension
+    {
+        /// <summary>
+        /// Gets or sets the harvester core for the extension.
+        /// </summary>
+        /// <value>The harvester core for the extension.</value>
+        public IHarvesterCore Core { get; set; }
+
+        /// <summary>
+        /// Harvest a WiX document.
+        /// </summary>
+        /// <param name="argument">The argument for harvesting.</param>
+        /// <returns>The harvested Fragments.</returns>
+        public abstract Wix.Fragment[] Harvest(string argument);
+    }
+}