Include pxvehicletankdrive.h

Working on a personal project in my free time, if it gets anywhere you’ll see it popup in the WIP part of the forum! So tried your way as redownloading the source code each new release has become a burden. The issue I ran into is it cannot find the PxVehicleTankDrive.h and throws a bunch of other missing header files. So how did you get around this? Add the physx directory as an external dependency? I know how to code, just building things is wizardry to me!