* 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.
Use correct TD4 checksum for vanilla TD4's.
Simplified the code for version detection since checksum numbers do not match up to a version
Fix TD4 imports.
Oh yeah TD4 doesn't have scenery or entrances
Move track related structs to correct files