DNN: Test Files

This release contains test models for DNN, which are large and shouldn't include in the repo, so published here.

Model source:

• https://github.com/axinc-ai/ailia-models-tflite
• https://github.com/BVLC/caffe/blob/master/models/bvlc_googlenet/readme.md
• https://github.com/pyannote/pyannote-data/blob/master/openface.nn4.small2.v1.t7
• https://github.com/martinwicke/tensorflow-tutorial/blob/master/tensorflow_inception_graph.pb
• https://github.com/onnx/models/
• https://github.com/opencv/opencv_3rdparty
• https://github.com/opencv/opencv_zoo/tree/master/models/face_detection_yunet
• https://github.com/opencv/opencv_zoo/tree/master/models/face_recognition_sface