Safetensors tf
# What does this PR do?

This PR continues to explore loading models using `safetensors` by adding support for TensorFlow model. It adds support for:
- saving model using `safetensors` with the same API as PyTorch models
- loading models with a safetensors file in TensorFlow-format
- loading models with a safetensors file in PyTorch-format

Follow-up PRs will add the support for sharded checkpoints in TensorFlow as well as loading in PyTorch a safetensors file in TensorFlow-format

**Note:** All tests failures are due to the new release of safetensors being broken, not this PR :-)
_The documentation is not available anymore as the PR was closed or merged._