Feature Request: Allow concurrent output to Outfile and stdout

[nestedfunction]

In the current version of gau, using the --o option will output to the specified outfile only, suppressing results output to stdout.

I think it might be nice to have --o operate independently without silencing stdout.

The would be useful in certain terminal logging setups. My existing 'workaround' had been omit --o and instead tee to an outfile.

Thanks!

[nestedfunction]

Similar issue mentioned by @BastienFaure in #20 (comment)

Noted that this is by design.

[lc]

Hey, thanks for opening this issue – I can add a flag like --suppress or something similar to suppress stdout and have that disabled by default

[nestedfunction]

Can I suggest naming the flag -s (--silent) like in curl? Thanks! :)