ml_recognizer: Separate main classification loop from one-time init
ml_recognizer: Separate main classification loop from one-time init

This allows for the overhead of loading the model and initializing it
with dummy data to happen only once. Subsequent calls to the main loop
are much faster as a result.

andresodio/lager,andresodio/lager,andresodio/lager,andresodio/lager