v0.1.1: Model save and load demo

Add a demo for model saving and loading in the notebooks for TNN (pytorch and tensorflow).
Remove redundant tf2 notebook.

v0.1.0

What's Changed

• Rename pytorch and tensorflow jupyter notebooks, streamline execution and usage
• Drop tf2utils folder entirely in favor of minimal example tensorflow jupyter notebook, in the same style as the pytorch juypter notebook
• Fix renaming of tf2utils by @reserschnell in #2

New Contributors

• @reserschnell made their first contribution in #2