refactor: Change how to get the current directory

Based on #11, replaced `Directory.GetCurrentDirectory()` with `AppContext.BaseDirectory`.

Author: AndrewKeepCoding

WinUI3Localizer.SampleApp/App.xaml.cs

@@ -116,9 +116,7 @@ private async Task InitializeLocalizer()
     {
 #if IS_NON_PACKAGED
         // Initialize a "Strings" folder in the executables folder.
-        StringsFolderPath = Path.Combine(Directory.GetCurrentDirectory(), "Strings");
-
-        //StorageFolder localFolder = await StorageFolder.GetFolderFromPathAsync(Directory.GetCurrentDirectory());
+        StringsFolderPath = Path.Combine(AppContext.BaseDirectory, "Strings");
         StorageFolder stringsFolder = await StorageFolder.GetFolderFromPathAsync(StringsFolderPath);
 #else
         // Initialize a "Strings" folder in the "LocalFolder" for the packaged app.