Add JetPack 6 and L4T v36.3 support for Jetson Orin

NVIDIA recently released the production version of JetPack 6 with L4T v36.3. This moves to Ubuntu 22.04 root file system along with CUDA 12. I would like balenaOS to support JetPack 6 and L4T v36.3 for the Jetson Orin AGX Dev Kit.