Feature request: C-x C-e to open the current prompt inside the editor [TUI parity with Unix tools and Aider TUI]

Question

> Exactly like Bash does it -- from its man page:
> 
> ```
>        edit-and-execute-command (C-x C-e)
>               Invoke an editor on the current command line, and execute the result as shell commands.  Bash attempts to  invoke  $VISUAL,
>               $EDITOR, and emacs as the editor, in that order.
> ```
> 
> Of course one could always get to the beginning of the line, type in `/editor`, and press enter, but I figured it could be a nice addition.
> 
> If there is appetite for including t