https://github.com/Unity-Technologies/arfoundation-samples
https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@1.0/manual/index.html
Cross-Platform AR in Unity! – AR Foundation Overview
https://www.youtube.com/watch?v=ml9qVRdEH4k
Getting Started With ARFoundation in Unity (ARKit, ARCore)
https://www.youtube.com/watch?v=Ml2UakwRxjk