The base interface for both widgets and themes.
The framework version that the widget/theme depends on.
This property is added in runtime.
Save the current locale only, but not the default locale.
The default string should be written in manifest.
There are some conventional keys:widgetLabel: the widget label.
This should be same as the
_widgetLabel value in translation/default.ts
The name must be unique and same as folder name.
The widget/theme version.