Created new XamlModuleCatalog

[brianlagunas]

Description of Change

Created a new XamlModuleCatalog for WPF. This fixed a number of issues with trying to use a XAML resource file as a module catalog in .NET Core and by placing modules in subdirectories.

Bugs Fixed

• [Bug] XAML ModuleCatalog is broken #2031

API Changes

Changed from this:

        protected override IModuleCatalog CreateModuleCatalog()
        {
            return ModuleCatalog.CreateFromXaml(new Uri("/Modules;component/ModuleCatalog.xaml", UriKind.Relative));
        }

To this:

        protected override IModuleCatalog CreateModuleCatalog()
        {
            return new XamlModuleCatalog("ModuleCatalog.xaml");
        }

Behavioral Changes

This will be a breaking change as I have removed the old crappy way of creating a XAML module catalog.

PR Checklist

• Has tests (if omitted, state reason in description)
• Rebased on top of master at time of PR
• Changes adhere to coding standard

[Coder-Nut]

Great job!!