feat: Updating vscode files for template

src/Uno.Extensions.Templates/content/unoapp-extensions/.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+  "explorer.fileNesting.enabled": true,
+  "explorer.fileNesting.expand": false,
+  "explorer.fileNesting.patterns": {
+	  "*.xaml": "$(capture).xaml.cs"
+  }
+}