Fix bug when copying images when input_dir = output_dir

[maturk]

Two things in this bug fix:

1. Remove the output_directory iff it is not the same as the input_directory containing images (we don't want to delete valuable user data accidentally).
2. Bypass shutil.SameFileError when copying files with a simple try catch. Works fine when input_dir = output_dir.

For some reason my ns-dev-test reformatted some of the longer arguments. I have a recent version of nerfstudio so not sure why it did that.

[tancik]

Have you rerun pip install -e .[dev]?

[maturk]

Have you rerun pip install -e .[dev]?

Yep. I think the problem was that I also had a format on save setting also applied to ruff in my vscode settings. I think this was messing with all the formatting and running ns-dev-test did not fix it for some reason. My local ruff was adding some more formatting it seems.

[tancik]

LGTM