Make `widgetId` optional

[diehbria]

Is your feature request related to a problem? Please describe. All synchro chart components require a widgetId, regardless if a user wants to use it or not.

WidgetId is only useful for intercepting annotation or name changes, a feature not required by everyone.

Describe the solution you'd like Make widgetId optional, auto generate one when left unspecified.

[chejimmy]

Thanks for the suggestion. We will look into this as soon as we can.