Replace the Stage 1 makefile with a genrule #602

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	16m 33s
build_attest_all (buildconfigs/oak_client_android_app.sh)	49m 33s
build_attest_all (buildconfigs/oak_containers_agent.sh)	11m 18s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	30m 45s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	25m 11s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	22m 22s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	23m 41s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	31m 0s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	35m 2s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	6m 5s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	6m 7s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	6m 19s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	6m 14s
build_attest_all (buildconfigs/oak_orchestrator.sh)	6m 49s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	42m 10s
build_attest_all (buildconfigs/stage0_bin.sh)	41m 55s
build_attest_all (buildconfigs/stage0_bin_tdx.sh)	41m 29s
	6h 42m 33s

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