bpo-38439: Add 256px IDLE icon (GH-17473)


Icon author: Andrew Clover, bpo-1490384
(cherry picked from commit 3a69f3caeeaea57048ed3bc3051e16854b9a4cd6)

Co-authored-by: Miro HronĨok <miro@hroncok.cz>
diff --git a/PCbuild/lib.pyproj b/PCbuild/lib.pyproj
index 7ed71bd..6e9d545 100644
--- a/PCbuild/lib.pyproj
+++ b/PCbuild/lib.pyproj
@@ -1589,6 +1589,7 @@
     <Content Include="idlelib\Icons\idle_32.png" />
     <Content Include="idlelib\Icons\idle_48.gif" />
     <Content Include="idlelib\Icons\idle_48.png" />
+    <Content Include="idlelib\Icons\idle_256.png" />
     <Content Include="idlelib\Icons\minusnode.gif" />
     <Content Include="idlelib\Icons\openfolder.gif" />
     <Content Include="idlelib\Icons\plusnode.gif" />