Snapshot for code and result

[DavianYang]

Clear and concise description of the problem

Instead of screenshot only code, snapshot both code and result. Then, export as a png

Suggested solution

• create a snapshot button
• by clicking it, it would popup preview
• then export PNG or download as a png

Alternative

• https://carbon.now.sh/
• https://github.com/octref/polacode

Additional context

[jeffydc]

We don't screenshot the code.

[DavianYang]

Since it's nonmandatory feature, u could drop it