NumNeighbors integration

[rusty1s]

No description provided.

[codecov]

Codecov Report

Merging #6505 (15e93fc) into master (ecf4020) will decrease coverage by 0.02%.
The diff coverage is 93.33%.

@@            Coverage Diff             @@
##           master    #6505      +/-   ##
==========================================
- Coverage   85.69%   85.68%   -0.02%     
==========================================
  Files         406      406              
  Lines       22665    22653      -12     
==========================================
- Hits        19423    19410      -13     
- Misses       3242     3243       +1     

Impacted Files	Coverage Δ
torch_geometric/sampler/neighbor_sampler.py	91.56% <87.50%> (-0.78%)	⬇️
torch_geometric/loader/link_neighbor_loader.py	100.00% <100.00%> (ø)
torch_geometric/loader/neighbor_loader.py	100.00% <100.00%> (ø)
torch_geometric/sampler/base.py	99.26% <100.00%> (+<0.01%)	⬆️
torch_geometric/typing.py	100.00% <100.00%> (ø)

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