Add TDX guest RTMR extension support #443

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	3m 51s
build_attest_all (buildconfigs/oak_client_android_app.sh)	51m 13s
build_attest_all (buildconfigs/oak_containers_agent.sh)	5m 13s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	27m 21s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	7m 36s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	5m 35s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	8m 5s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	13m 10s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	16m 24s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	3m 59s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	4m 28s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	4m 23s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	4m 6s
build_attest_all (buildconfigs/oak_orchestrator.sh)	3m 52s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	16m 57s
build_attest_all (buildconfigs/stage0_bin.sh)	39m 46s
	3h 35m 59s

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