[FEATURE] oEmbed Support

[wwahammy]

Is your feature request related to a problem? Please describe.
It can be hard to add the widget to a given page even when the tool supports oEmbed, like Wordpress or Squarespace.

Describe the solution you'd like
Provide oEmbed support so widgets can be easily added.

Additional context
This may require having saved widgets so you can refer one widget to one oembed item.