playground - ability to save existing sessions

[anuragphadke]

Is your feature request related to a problem? Please describe.
http://localhost:3000/playground : The playground URL offers an easy way to test prompts etc, however, all history is lost when we refresh the page / close the tab. This makes it painful to create it every time we need it, plus ability to generate code via one-click will be super helpful.

Describe the solution you'd like
Ability to save playground sessions as a preset, view as a code (starting with curl or node), and ability to share (though unsure how we can do it if we are hosting locally)

Describe alternatives you've considered
Currently, I do it manually every-time, and it takes a lot of time.

Additional context
#665 I looked in this in terms of pointers to save profiles.. appreciate any pointers here, and can contribute back via PR.

[tjbck]

Great idea, Let's continue our discussion here: #2000