added OO python detector and venv setup file.

[sarafalamaki]

[danlapko]

Seems memory isn't released (especially GPU) after deleting Detector instance.

[sarafalamaki]

Seems memory isn't released (especially GPU) after deleting Detector instance.

Yeah, I just copied how the detector.py file worked, but turned it all into a class. In my case I use the object as a persistent object (I create 3 different detectors and use them until the program ends), so it's not an issue, but if you send me the references for the destructors, I'll create a clean-up function. I'd imagine that'd be useful if you have a thread pool or something.