IUIText interface for UIText class

- Added test to VSCode tasks
- New deploy keys
- Renamed dpkgpackage workflow to publish
- Bump to version to 2.0, beta 1

CSTNet/UIText.cs

@@ -1,9 +1,8 @@
 // This project is licensed under the BSD 3-Clause license.
 // See the LICENSE file in the project root for more information.
-
 namespace CSTNet;
 
-public class UIText
+public class UIText : IUIText
 {
     string Language { get; set; } = "english";