append faster-coco-eval as base backend for COCODetection

[MiXaiLL76]

https://github.com/MiXaiLL76/faster_coco_eval

Motivation

I often use this project, but I saw it abandoned and without a public repository on github. Also, part of the project remained unfinished for a long time. I implemented some of the author's ideas and decided to make the results publicly available.

Modification

This implementation greatly speeds up the evaluation time for coco's AP metrics, especially when dealing with a high number of instances in an image.

Use cases

COCODetection(..., faster=True)

Type	COCOeval	COCOeval_faster	Profit
bbox	18.477 sec.	7.345 sec.	2.5x faster
segm	29.819 sec.	15.840 sec.	2x faster

[CLAassistant]

All committers have signed the CLA.

[MiXaiLL76]

I don’t know what’s going on in the unit tests, they fail outside of my changes, on other tests)

[MiXaiLL76]

@zhouzaida @C1rN09 cannot run last test with GPU

Job was rejected because resource class gpu.nvidia.small, image ubuntu-2004-cuda-11.2:202103-01 is not a valid resource class

mb https://discuss.circleci.com/t/linux-cuda-deprecation-and-image-policy/48568

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mb we need update ci for this build? CUDA 11.2 | Removed from linux-cuda-11