COVID19 Model Based Projection Visualizer

Modifications done by the CASUS team to the visualization website for MATSim/EpiSim software, originally developed by TU Berlin at https://github.com/matsim-vsp/covid-sim, as used on the Where2Test website https://www.where2test.de/covidsim. Snapshot of the version used on the Where2Test website as of the project end by 26.06.2023 published here to fulfill the obligations of the AGPL license.