Show PyTorch JIT in Performance Benchmarks

[xsacha]

As it turns out, PyTorch is actually slower when running FP16 compared to FP32 (I think it just converts everything back to FP32 to do the processing).
Using JIT has a slight performance improvement and I believe is the recommended way to run inferencing in PyTorch. I believe it would be useful to show the JIT as a comparison for both FP16 and FP32.