Implement face recognition

[robmarkcole]

Resources:

• https://medium.com/analytics-vidhya/facenet-on-modile-part-3-cc6f6d5752d6
• https://machinelearningmastery.com/how-to-develop-a-face-recognition-system-using-facenet-in-keras-and-an-svm-classifier/
• https://github.com/robmarkcole/convert-tensorflow-mobilefacenet-model-to-tflite (includes .tflite file)
• https://arxiv.org/abs/1804.07573