use command line argument for input model path

[todo]

speech-recognition/src/sr/core.py

Lines 101 to 105 in 88eb9c3

 # TODO: use command line argument for input model path 
 file = open('models-4gaussians-em/' + digit + '.pkl', 'rb') 
 models.append(pickle.load(file)) 
 file.close() 
  

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This issue was generated by todo based on a TODO comment in 88eb9c3. It's been assigned to @tjysdsg because they committed the code.