* Put all of TitleSequenceManager into the same namespace
* Move RideConstructionState into the OpenRCT2 namespace
* Adopt existing namespaces into OpenRCT2 namespace
This adds `using namespace OpenRCT2` to compilation units where appropriate,
as a means to get the codebase to compile until these units have been placed
in a namespace of their own.
* Remove dependency on StringIds.h from Localisation.h
* Include Language.h in UTF8.cpp for function declarations
* Rename tests/Localisation.cpp to tests/LocalisationTest.cpp
* Eliminate unnecessary abstraction for path finding
* Pass the goal to ChooseDirection instead of using globals
* Remove gPeepPathFindGoalPosition and pass it by parameter instead
* Remove _peepPathFindIsStaff and make ignoring banners explicit
* Code style and naming fixups
* Apply clang-format
* Add comment specifying to why it does not ignore banners
* Apply review comments
