Test time to return exit code after training

[wasertech]

This is a CI test to train and export a small model using M-AILABS' data.

The goal is to monitor how much time it takes to return any exit code after the training function was called.

See #2195 for more context.

NOTE: this test uses the old train file in /code, still the results are the same if we use the training module instead.

As you can see in the logs, it never reaches line 38 and bellow of the test.

[wasertech]

To pass the test, you need to comment the memory test of the train function in training.train see #2199.

[wasertech]

I've updated the test to use the module in training, checkout #2205.