GitLab

* Use an empty torch tensor to indicate no fp8 information in extra_state
Signed-off-by: Peter St. John <pstjohn@nvidia.com>

* Add huggingface from_pretrained / save_pretrained tests

Adds integration tests to ensure models containing TransformerLayer
objects can be saved and loaded using the from_pretrained and
save_pretrained methods.
Signed-off-by: Peter St. John <pstjohn@nvidia.com>

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Signed-off-by: Peter St. John <pstjohn@nvidia.com>
Co-authored-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>