Add Maps
Added react-native-maps and expo location to display a map with the current user location.
Found a major issue: Currently it is not possible to display Markers on the Map, because of the new architecture of react native (which is required by Expo SDK 52 -.-) Here is the issue thread.
I don't know how we should implement the locations showing up on the app now... Hopefully they fix it in time, but we definetly need to talk with the Prof about this!