Create file with report printed to stdout on find_unused

[bbarhight]

Currently, when I run airiam find_unused I get a print out to stdout of the information that I'd like and airiam writes a file iam_data.json to the working directory. I'd for airiam to also write a results file in some format which contains the information that is written to stdout. (or... an option for it?)

[kuspia]

assign me, I cn doi this

[nimrodkor]

@kuspia We would appreciate a contribution here!