excluded tools from source-build

Author: vlada-shubina

tools/Directory.Build.props

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
+<Project>
+  <Import Project="..\Directory.Build.props" />
+  <PropertyGroup>
+    <ExcludeFromSourceBuild>true</ExcludeFromSourceBuild>
+  </PropertyGroup>
+</Project>