Add num_workers to audonnx.Model and load()

[audeerington]

Closes #80

This adds the num_workers argument to audonnx.Model and audonnx.load(). It now only uses 1 thread by default, whereas before onnxruntime chose the number by default.

The num_workers argument was also added to audonnx.testing.create_model().

[codecov]

Codecov Report

Merging #81 (b9140cd) into main (8ea3b90) will not change coverage.
The diff coverage is 100.0%.

Additional details and impacted files

Files	Coverage Δ
audonnx/core/api.py	100.0% <ø> (ø)
audonnx/core/model.py	100.0% <100.0%> (ø)
audonnx/core/testing.py	100.0% <ø> (ø)

[hagenw]

Great, thanks for adding this.

[hagenw]

Could you update the description of the pull request and mention, that you also added the argument to audonnx.testing.create_model().

And the title of the pull request is slightly too long (commit messages should be <=50 chars), so maybe change it to "Add num_workers to audonnx.Model and load()".

[hagenw]

Everything looks good now, feel free to merge.