Enable NeighborLoader to return number of sampled nodes and edges per hop

[mszarma]

No description provided.

[codecov]

Codecov Report

Merging #6834 (b506804) into master (06b6d56) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

❗ Current head b506804 differs from pull request most recent head a81ea68. Consider uploading reports for the commit a81ea68 to get more accurate results

@@            Coverage Diff             @@
##           master    #6834      +/-   ##
==========================================
- Coverage   91.50%   91.46%   -0.05%     
==========================================
  Files         427      427              
  Lines       23038    23058      +20     
==========================================
+ Hits        21080    21089       +9     
- Misses       1958     1969      +11     

Impacted Files	Coverage Δ
torch_geometric/loader/node_loader.py	93.33% <100.00%> (-2.32%)	⬇️
torch_geometric/sampler/base.py	98.01% <100.00%> (+0.05%)	⬆️
torch_geometric/sampler/neighbor_sampler.py	91.56% <100.00%> (ø)
torch_geometric/loader/temporal_dataloader.py	82.35% <0.00%> (-11.40%)	⬇️
torch_geometric/loader/data_list_loader.py	90.90% <0.00%> (-9.10%)	⬇️
torch_geometric/loader/dense_data_loader.py	92.85% <0.00%> (-7.15%)	⬇️
torch_geometric/loader/zip_loader.py	93.93% <0.00%> (-6.07%)	⬇️
torch_geometric/loader/link_loader.py	93.68% <0.00%> (-2.02%)	⬇️
torch_geometric/loader/graph_saint.py	97.97% <0.00%> (-1.02%)	⬇️
... and 3 more

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