This PR contains the work done to add support to the **Wikipedia** app to show a custom location in the map of the *Places* view coming from a places deep link.
To provide further details about the work:
- [x] implemented the handling of location coordinates coming from a URL inside the function that generates a `NSUSerActivity` instance out of *places* deep links;
- [x] added the `wmf_locationFromURL` property to the `NSUSerActivity` via an extension that returns a `CLLocation` instance with latitude and longitude coordinates if provided;
- [x] implemented the "centerMap(onLocation:)" function in the `PlacesViewController` view controller that, essentially, center the map of this view controller to a given location;
- [x] improved the handling of a *places* user activity in the `WMFAppViewController` view controller to center the map in case a location has been provided via a deep link;
- [x] fixed some duplicated code that was blocking the test from compiling.
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Reviewed-on: rock-n-code/deep-linking-assignment#2
Javier Cicchelli
6d76ba467c