Moves tf to the numpy interface

[aarmey]

The tensorflow numpy interface now seems to work, so I'm interested in feedback on this. One consideration is this interface only came out a version or two ago, and so we might deprecate the old interface first before moving up the required version of tensorflow.

[codecov]

Codecov Report

Merging #407 (9c2d6e2) into main (7460dd2) will decrease coverage by 0.04%.
The diff coverage is 100.00%.

❗ Current head 9c2d6e2 differs from pull request most recent head 725c42f. Consider uploading reports for the commit 725c42f to get more accurate results

@@            Coverage Diff             @@
##             main     #407      +/-   ##
==========================================
- Coverage   88.47%   88.42%   -0.05%     
==========================================
  Files         107      107              
  Lines        6367     6367              
==========================================
- Hits         5633     5630       -3     
- Misses        734      737       +3     

Impacted Files	Coverage Δ
tensorly/decomposition/robust_decomposition.py	100.00% <100.00%> (ø)
tensorly/tenalg/proximal.py	67.21% <0.00%> (-0.48%)	⬇️
tensorly/decomposition/_cp.py	86.90% <0.00%> (-0.37%)	⬇️

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[JeanKossaifi]

It looks good to me. The big question is whether we keep TensorFlow or just remove it altogether.
If the new interface works transparently perhaps it's worth keeping just in case some users still rely on it.

[aarmey]

The new interface seems to work transparently for me. Perhaps we include it but reevaluate if there are future issues? (I know it has frequently been a headache.)

[JeanKossaifi]

Great, I've merged the conflict. Let me know if I've missed anything, otherwise looks good to merge!