Packaged apps test (#4921)

* Added wrapper for PackageManager and Package class

* Added tests for package in development and framework mode

* Renamed UWP test file

* Improved readability of UWP tests

src/modules/launcher/Plugins/Microsoft.Plugin.Program/Programs/PackageWrapper.cs

@@ -0,0 +1,41 @@
+using Package = Windows.ApplicationModel.Package;
+
+namespace Microsoft.Plugin.Program.Programs
+{
+    public class PackageWrapper : IPackage
+    {
+        public string Name { get; }
+
+        public string FullName { get; }
+
+        public string FamilyName { get; }
+
+        public bool IsFramework { get; }
+
+        public bool IsDevelopmentMode { get; }
+
+        public string InstalledLocation { get; }
+
+        public PackageWrapper(string Name, string FullName, string FamilyName, bool IsFramework, bool IsDevelopmentMode, string InstalledLocation)
+        {
+            this.Name = Name;
+            this.FullName = FullName;
+            this.FamilyName = FamilyName;
+            this.IsFramework = IsFramework;
+            this.IsDevelopmentMode = IsDevelopmentMode;
+            this.InstalledLocation = InstalledLocation;
+        }
+
+        public static PackageWrapper GetWrapperFromPackage(Package package)
+        {
+            return new PackageWrapper(
+                        package.Id.Name,
+                        package.Id.FullName,
+                        package.Id.FamilyName,
+                        package.IsFramework, 
+                        package.IsDevelopmentMode,
+                        package.InstalledLocation.Path
+                        );
+        }
+    }
+}