Add tests

[ma595]

Create a suite of tests:

Unit testing: Test small components of detectree2:

Regression testing:

CI using github actions:

• linting / style etc.
• build tests (conda environment, pip)
• use pre-built wheel / tar.gz in github actions using artifacts. (mentioned in docs issue)
• run prediction on CPU
• run prediction on GPU (not currently supported on github actions - is it possible to set up a runner to use CSD3 resources instead?)

[ma595]

https://www.jeremyjordan.me/testing-ml/ The sequence https://eugeneyan.com/writing/testing-ml/

[ma595]

Unit test ideas: Predictions:

• f1 score
• area IoU

Tiling:

• is_overlapping_box
• translation/scaling

Training:

Integration tests:

• Run tiling -> training -> prediction on some example data. (this needs dependencies so output of one leads to input of another - pytestt-fixtures?).
• Prediction could run on pre-trained model (use artefacts)
• IoU dummy data / example data.