Display MDIX version in demo app

[corvinsz]

Thoughts on displaying the versions of the libraries (MaterialDesignThemes & MaterialDesignColors) used in the demo app?

It could look something like this:

A friend was checking something in the demo and later noticed he was still using an old version. Hence this change would be quite useful.

[Keboo]

Image doesn't look like it uploaded, but I think it would be a good idea to show the version inside of the demo apps.

The key here will be linking it so that when the demo app is built on the pipeline it uses the version specified there (which should match the assembly version)

[corvinsz]

I reuploaded the image, hopefully everyone can see it now.
For anyone interested in the proposed UI layout, here is the XAML:

<Separator />

<StackPanel Margin="10">
    <TextBlock Style="{StaticResource MaterialDesignHeadline6TextBlock}" Text="Version" />
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition />
            <ColumnDefinition Width="auto" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition />
        </Grid.RowDefinitions>
        <TextBlock Grid.Row="0"
                   Grid.Column="0"
                   IsEnabled="False"
                   Text="MaterialDesignThemes " />
        <TextBlock Grid.Row="0"
                   Grid.Column="1"
                   Text="5.1.0" />

        <TextBlock Grid.Row="1"
                   Grid.Column="0"
                   IsEnabled="False"
                   Text="MaterialDesignColors " />
        <TextBlock Grid.Row="1"
                   Grid.Column="1"
                   Text="3.1.0" />
    </Grid>
</StackPanel>

[Keboo]

I think that looks great, happy to take a PR for it.

[corvinsz]

implemented in #3770