Batch of updates - Nvidia GPU support & more
Created by: maslovaz
- onnxruntime cpp - added cuda and tensorrt (FP16&FP32) support
- onnxruntime python - added, with CPU, cuda and tensorrt (FP16&FP32) support
- pytorch - fix cuda support, added tensorrt (FP16&FP32) support, change preprocessing to have ability to run language models and models with more than one input
- tensorflow&tensorflowlite - add saved model support, move to tf2 API usage
- added converter to TF2 saved model format and optimization with TRT for NVIDIA devices
- fix preprocessing to cyclically feed inference script with limited data