Add more score output types

[KevinEloff]

Currently the scoring only allows type float per score name:

Score = Dict[str, float]
ScoreList = List[Score]

It may be worth extending to different input types such as a list of floats per score name. For example, this would allow the app to return a distribution of probabilities over he entire protein sequence. Another possibility is returning scores as a string, to allow for the app to return a list of predicted proteins, etc.