Add CUDA 3D tensor contraction demo

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.48%. Comparing base (997c8f9) to head (e234396). Report is 1 commits behind head on master.

Additional details and impacted files

[](https://app.codecov.io/gh/vgvassilev/clad/pull/1141?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Vassil+Vassilev) ```diff @@ Coverage Diff @@ ## master #1141 +/- ## ======================================= Coverage 94.48% 94.48% ======================================= Files 50 50 Lines 8850 8850 ======================================= Hits 8362 8362 Misses 488 488 ```

[vgvassilev]

Did you make sure that the output result is as expected?

[kchristin22]

Yes, I ran a python script using torch instead of Clad for the same set of inputs

[vgvassilev]

Yes, I ran a python script using torch instead of Clad for the same set of inputs

Awesome! Great work!