[FEATURE REQUEST] Removal of __main__.py in 1.7.3

[michaeltinsley]

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After having updated Prospector, calling Prospector as a module (python3 -m prospector), no longer worked.
Looking into this, it seems prospector/__main__.py has been removed.

Was there any particular reason for this? I am happy to fix this if it is wanted?

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[carl-pr-ai]

I removed it while tidying things up and removing things I didn't think were used any more, I thought it was a relic of the past setuptools-based packaging. Basically it got removed because I forgot about the use case for running as a module.

If you create a PR to restore that I'll gladly merge that in!