Show version in demo app (#3770)

* test

* test

* addingVersionInDemo

* Code Suggestion for #3736
#3736

I added some suggestions as a cloud patch (let me know if you have any trouble viewing it).

Some key changes here:
1. You can access the environment variables to get the versions. I left some code showing how to do this.
2. You can setup a string property in the view model and bind that in the XAML rather than the code behind.
3. There are several TODO items I left in the cloud patch, let me know if you have any questions on them.
4. If you want to see my review of this, I did it it live on twitch. It is at the beginning of this stream. https://www.twitch.tv/videos/2318667161

* Updating to read in the library versions

Updating the MainWindowViewModel to use the MVVM toolkit.

* Minor cleanup

---------

Co-authored-by: asabrina messikh <[email protected]>

Author: Keboo

.github/workflows/get_versions.yml

@@ -2,7 +2,7 @@ name: Setup Versions
 
 on:
   workflow_call:
-    inputs: 
+    inputs:
       is-full-release:
         required: false
         type: boolean