Google Coral support

**ML part to Google Coral accelerator**
If the Google Coral USB accelerator (Google Edge TPU) could be used for CompreFace it would offload the ML part.
It could possibly run also on ARM as there are Docker Images (for ARM too) to support the Google Edge TPU.

I got it running for another project (https://github.com/matiasdelellis/facerecognition) as a simple solution to provide a version with modularization (https://github.com/matiasdelellis/facerecognition/issues/210) in mind to make it run on eg. RaspberryPi 4.

I think this project could be used in the way I did with my simple docker container. The Nextcloud facerecognition app could use CompreFace as a engine for the ML part and with ML accelerators (like Google Coral or others) it would offer enough ML power to be usable on "home Nextcloud Clouds" in your closet 😉.