Deno as an optional backend

[trymeouteh]

Would be cool to have Deno as a backend option.

• Deno is written in Rust!
• Deno is good on security with its permissions
• Deno is backward compatible with NodeJS

This way you can have the front end and back end written in JavaScript and not have to learn Rust.

[FabianLars]

This "feature" is tracked here #4670 - deno would very likely be one of the first targets.