Add nightly GPU tests

[rusty1s]

No description provided.

[codecov]

Codecov Report

Merging #7895 (a9fa856) into master (e1fb055) will decrease coverage by 0.80%.
The diff coverage is 62.50%.

@@            Coverage Diff             @@
##           master    #7895      +/-   ##
==========================================
- Coverage   90.14%   89.35%   -0.80%     
==========================================
  Files         457      457              
  Lines       26815    26815              
==========================================
- Hits        24173    23961     -212     
- Misses       2642     2854     +212     

Files Changed	Coverage Δ
torch_geometric/transforms/half_hop.py	92.10% <0.00%> (ø)
torch_geometric/typing.py	45.06% <66.66%> (-38.59%)	⬇️
torch_geometric/nn/conv/rgcn_conv.py	94.93% <100.00%> (ø)
torch_geometric/nn/dense/linear.py	88.99% <100.00%> (ø)

... and 31 files with indirect coverage changes

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