Feature request: support for Alt + Backspace

Hi! jnv is an awesome tool I've started using yesterday for processing large and deeply nested JSONs. The only painpoint I have is that it doesn't support Alt + Backspace.

When writing a relatively big query, it is easier for me to edit the query in a separate editor, restart jnv and paste the new query, which beats the whole point of using jnv instead of jq.

I'd appreciate it a lot if you added this feature!