[FEATURE] Add thumbnails to create widgets cards.

[felixgateru]

Is there an existing feature request for this?

• I have searched the existing feature requests

Is your feature request related to a problem? Please describe.

The create widgets cards do not have thumbnails as a preview of the charts

Describe the feature you are requesting, as well as the possible use case(s) for it.

Create thumbnails for all the widgets as a preview for the chart.

Indicate the importance of this feature to you.

• Must-have
• Should-have
• Nice-to-have

Anything else?

No response