[modding] Implement Vehicles & Fix Animations (#109)

* Train works

* Fix minimap

* Fix highway

* Fix

* Refactor train and boat

* Update

* Implement Trucks

* Fix tanker

* Finish implementing vehicles

* Fix animations

* Fix spawn players

* Fix spawn players

* Fix loading custom data

---------

Co-authored-by: MegaMech <7255464+MegaMech@users.noreply.github.com>

src/engine/vehicles/Utils.cpp

@@ -0,0 +1,12 @@
+#include <libultraship.h>
+#include "Utils.h"
+
+extern "C" {
+#include "macros.h"
+#include "defines.h"
+#include "code_80005FD0.h"
+}
+
+uint32_t CalculateWaypointDistribution(size_t i, uint32_t numVehicles, size_t numWaypoints, uint32_t centerWaypoint) {
+    return (uint32_t)(((i * numWaypoints) / numVehicles) + centerWaypoint) % numWaypoints;
+}