Add implementation of CrossEntropyLoss & add ONNX reports

[orausch]

The ONNX coverage report is uploaded to the CPU CI github action as an artifact.

[codecov[bot]]

Codecov Report

Merging #113 (37f2bf2) into master (aa2730c) will increase coverage by 7.53%. The diff coverage is 76.09%.

@@            Coverage Diff             @@
##           master     #113      +/-   ##
==========================================
+ Coverage   60.84%   68.36%   +7.53%     
==========================================
  Files          59       60       +1     
  Lines        6848     6894      +46     
==========================================
+ Hits         4166     4713     +547     
+ Misses       2682     2181     -501     

Impacted Files	Coverage Δ
...nnx/op_implementations/criteria_implementations.py	75.56% <75.56%> (ø)
daceml/onnx/op_implementations/__init__.py	100.00% <100.00%> (ø)
daceml/torch/module.py	88.78% <0.00%> (+1.02%)	:arrow_up:
daceml/onnx/nodes/onnx_op.py	96.11% <0.00%> (+1.06%)	:arrow_up:
daceml/torch/dispatchers/ctypes_module.py	100.00% <0.00%> (+1.06%)	:arrow_up:
daceml/torch/dlpack.py	94.94% <0.00%> (+1.27%)	:arrow_up:
daceml/autodiff/backward_pass_generator.py	92.42% <0.00%> (+1.33%)	:arrow_up:
daceml/onnx/onnx_importer.py	96.64% <0.00%> (+1.87%)	:arrow_up:
daceml/torch/dispatchers/cpp_torch_extension.py	94.06% <0.00%> (+1.98%)	:arrow_up:
daceml/torch/dispatchers/common.py	100.00% <0.00%> (+2.86%)	:arrow_up:
... and 11 more

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