GitLab

**Description**
Remove fp16 samples type converting time for training cnn and lstm inference.

**Description**
Remove fp16  samples type converting time for cnn and lstm models.

Add transformers for TensorRT inference.

* Benchmarks: Add Benchmark - Add LSTM model benchmarks.

Benchmarks: Code Revision - Fix some issue for BERT benchmark. (#58)

Benchmarks: Add Benchmark - Add Pytorch BERT benchmarks, including bert-base and bert-large.   (#20)

* add pytorch bert benchmarks.

* revise code

* fix issue

* revise code.
Co-authored-by: Guoshuai Zhao <guzhao@microsoft.com>