Added tensor transforms jupyter notebook

[vfdev-5]

Description:

• Updated docs and provided an example of scriptable transforms

[codecov]

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  Files             ?       96           
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Impacted Files	Coverage Δ
torchvision/transforms/transforms.py	80.92% <ø> (ø)

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[fmassa]

Thanks for the PR!

I have some early comments, which are nits

[vfdev-5]

ToDo: Improve inference example

• Inference on batch input (CPU and GPU)
• list advantages: jit script, batch and GPU
• convert the script to a jupyter notebook + Colab

[fmassa]

Thanks a lot for the improvements, this is looking great!

I've made some more comments, let me know what you think

[fmassa]

This is looking great, thanks!

I can't comment on the specific lines of the notebook because it's too large (due to the images) so GitHub won't show it. There are a few minor things that I think could be improved, but they can be added in a follow-up PR.

There are a few empty cells that could be cleaned up as well.

Also, is there a way of making the notebook a bit smaller? It's currently > 1MB, maybe cleaning up the images (by removing the output of all cells) could help there?

[vfdev-5]

@fmassa thanks for the review, I can address all that in this PR:

• remove images, empty cells and ToDo section
• replace all mentions of "torch jit script" by "torchscript"

[fmassa]

Thanks a lot!