refactor: entrypoint of script

[a-wallen]

Parse the system args in main() for command line use.

For people using this in their python script they should be able to supply the same arguments in the function.

[ppfeister]

Hm.
4/9 of the original unit tests seem to fail. Upon further investigation, this is what I've come away with --

Unit tests ran with:

cd sherlock
python -m unittest tests.all --verbose

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As a standalone script...

python3 sherlock xyz works as before Sherlock was packaged (this is a +), but this (on its own) is also not hugely beneficial for Sherlock's inclusion in other scripts as a module or package, only really as an included file.

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Now the various installed-package forms...

pip install .
sherlock test123

Install works fine. Manual test however fails with infinite recursion.

Note that sherlock --version seems to work, just not beginning any scans.

And when testing the now-installed package within Python...

import sherlock
sherlock({anything})

Returns that sherlock is not a callable module.

I'm not seeing any part of entrypoint main() that accepts passed (python) args, only the original cli parser args. It seems that sherlock() was given extra arguments (with defaults), but this is not the package entrypoint as defined by pyproject.