Initial suspicious commands

[therealnb]

Initial implementation of the prototype in https://github.com/stacklok/research/blob/command-detection/command_detection/command_models.ipynb. Closes #844

Note that:

• There has been little optimisation of the ANN
• We need to work on getting better data
• Performance may not be good enough - testing required

Accuracy: 0.88
Precision: 0.8823529411764706
Recall: 0.7894736842105263
F1 Score: 0.8333333333333333

[yrobla]

It's great to have that! Have we measure how much time does it normally add to the pipeline?

[therealnb]

@yrobla there is some timing info in https://github.com/stacklok/research/blob/command-detection/command_detection/command_models.ipynb (some charts). This model takes about 0.03-0.05 seconds.