Intro+Terrain

Added in terrain, then buildings then worked on Intro cinematic. TODO
the tracking + transition to the main camera->home scene. Delete most
buildings from home.unity file and characters from the intro.scene to
save resources. Fix c
Finished Camera cinematic

Now the camera rolls from the water through the mountains and pans
around the building. A bit of a delay from marker to marker. TODO:
Transition from intro to menu