Adding Elestio as deployment option

[kaiwalyakoparkar]

Hey team,
I am Kaiwalya, Developer Advocate at Elestio. Elestio has been providing options of fully deploying and managing ImmuDB application as shown here. I think it would be a great idea if we can add it to official readme/documentation here.
🔔 In addition to this, if you are interested we provide partnership opportunities with tools we support by revenue share upon addition of this method in docs. If you would like to collaborate, just shoot me an email at [email protected] :)

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