feat: Added Elestio as one-click deploy option

[kaiwalyakoparkar]

This PR introduces new one-click deployment option Elestio

Fixes #7461

[github-actions]

👈 Launch a Binder on branch kaiwalyakoparkar/notebook/adding-elestio

[jasongrout]

Thanks for reaching out about partnering with and supporting Jupyter (for example, you mention revenue sharing in the issue you opened). We've tried to keep a neutral stance on the many commercial Jupyter hosting solutions, so while it wouldn't be appropriate to merge this PR endorsing your service in the official docs, we do have another exciting opportunity for you to partner with and support Jupyter: the nascent Jupyter Foundation.

Project Jupyter is currently forming the Jupyter Foundation (under the Linux Foundation) as a way for companies to easily support Jupyter and its ecosystem and be recognized for their support. I'll send you an email to set up a time to talk with representatives from the Jupyter Executive Council and the Linux Foundation.

[kaiwalyakoparkar]

I understand. Thank you so much for your comment and sending an email 🙌