add univariate snensitivity plots, some output code, added the model size and length to parameter tuple. New output is in /CovidAlertVaccinationModel/plots/univariate

merge IntervalsModel into CovidAlertVaccinationModel, dependecies are too tight to manage as too packages easily

Seperated Zeroweighteddistributions into its own package, implemented WS/Rest functions, although fitting doesn't work too well yet