Aling product names for the artifact signing

We have a number of external dependencies that are built from our repo,
but have various product names.

This PR aligns all projects to the same productname:
    `[assembly: AssemblyProduct("GitExtensions")]`

This is required by SignPath to make sure that OSS projects don’t sign
 3rd party libs.

Author: RussKie

Git.hub/Properties/AssemblyInfo.cs

@@ -1,5 +1,4 @@
 using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 // Allgemeine Informationen über eine Assembly werden über die folgenden 
@@ -9,7 +8,7 @@
 [assembly: AssemblyDescription("GitHub API for C#")]
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("")]
-[assembly: AssemblyProduct("Git.hub")]
+[assembly: AssemblyProduct("GitExtensions")]
 [assembly: AssemblyCopyright("Copyright (c) 2012 Marcus Bauer <[email protected]>")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]