Support np.memmap in NeighborLoader

[rusty1s]

No description provided.

[codecov]

Codecov Report

Merging #5696 (00f2b38) into master (52ce0e4) will increase coverage by 0.03%.
The diff coverage is 82.92%.

❗ Current head 00f2b38 differs from pull request most recent head 1f7058c. Consider uploading reports for the commit 1f7058c to get more accurate results

@@            Coverage Diff             @@
##           master    #5696      +/-   ##
==========================================
+ Coverage   83.81%   83.84%   +0.03%     
==========================================
  Files         349      349              
  Lines       19253    19265      +12     
==========================================
+ Hits        16136    16152      +16     
+ Misses       3117     3113       -4     

Impacted Files	Coverage Δ
torch_geometric/loader/utils.py	82.80% <68.18%> (+0.37%)	⬆️
torch_geometric/data/storage.py	82.24% <100.00%> (+0.16%)	⬆️
torch_geometric/data/data.py	92.21% <0.00%> (+0.23%)	⬆️
torch_geometric/sampler/utils.py	83.07% <0.00%> (+6.15%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more