Output selected path to stdout and exit

[lusingander]

Discussed in #64

^{Originally posted by dolzenko April 4, 2025}
E.g. in my case I wanted a quick way to download and run custom command on the file. Or, possibly, run command with path to file on the bucket. I'm thinking something along the lines of fzf.
https://github.com/junegunn/fzf
Seems like the simplest thing would be to provide new keybind to output selected/downloaded path to stdout and exit

[lusingander]

It seems like we need to be able to write the tui output to stderr.
https://ratatui.rs/faq/#should-i-use-stdout-or-stderr