fix: Windows OpenMP duplicate issue + tutorials torch.hub rate limit issues (monkeypatch)

[eliegoudout]

Before, we'd get the following upon using faiss features on Windows (without the monkeypatch):

OMP: Error #15: Initializing libomp140.x86_64.dll, but found libiomp5md.dll already initialized.
OMP: Hint This means that multiple copies of the OpenMP runtime have been linked into the program. That is dangerous, since it can degrade performance or cause incorrect results. The best thing to do is to ensure that only a single OpenMP runtime is linked into the process, e.g. by avoiding static linking of the OpenMP runtime in any library. As an unsafe, unsupported, undocumented workaround you can set the environment variable KMP_DUPLICATE_LIB_OK=TRUE to allow the program to continue to execute, but that may cause crashes or silently produce incorrect results. For more information, please see http://openmp.llvm.org/

It is now fixed thanks to faiss-cpu>=1.12 explicitly adding OpenBLAS submodule.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (fefb2e0) to head (77cb540).
⚠️ Report is 8 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop       #20   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           69        69           
  Lines         3722      3728    +6     
=========================================
+ Hits          3722      3728    +6     

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