Adds infrastructure for various Sapphire Rapids instances on AWS #12

Job	Run time
setup_shared_matrix	5s
build_init_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.init, ghcr.io/llnl/re...	4m 26s
build_caliper_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.caliper, ghcr.io/l...	8m 26s
build_thicket_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.thicket, ghcr.io/l...	8m 7s
build_benchpark_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.benchpark, ghcr....	8m 23s
build_spawn_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.spawn, ghcr.io/llnl/...	7m 28s
	36m 55s

Provide feedback