Request: Support pulling posters that have identical filenames

[techknight]

Is your feature request an improvement on an existing script? Please link to script.
https://github.com/blacktwin/JBOPS/blob/master/utility/plex_api_poster_pull.py

Is your feature request related to a problem? Please describe.
Several of the posters stored in my Plex metadata have the identical filenames, which the plex_api_poster_pull script currently treats as an error to be skipped over, instead of writing unique filenames.

Describe alternatives you've considered
I believe that this situation occurs in the Plex metdata when multiple editions of a film are stored together in the same folder, and have individual custom poster artwork. (Going forward, I'll instead store each edition of a film in a separate folder.)