GitLab

Add an option to serialize test i/o to file

Small refactoring of the inferencing code.
Change the default directory where generated ONNX files are stored.
Use the temp directory to avoid clogging the file system.
Add an option to serialize test input/output tensors to a
Polygraphy RunResults object.
Signed-off-by: Neta Zmora <nzmora@nvidia.com>
Co-authored-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>