num_features is ambiguous

[luiztauffer]

The variable num_features is ambiguous. At the config.yaml file, it represents the number of keypoints * spaces, while throughout the code it is modified to represent the number of features used by the RNN model, which can be:

• (keypoints * spaces - 3) for data that gets egocentric aligned by VAME
• (keypoints * spaces) for that that comes “fixed”

I suggest we change its value within the config file to represent exactly how many features the project’s model is using.