Add initial Attester template #414

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	4m 7s
build_attest_all (buildconfigs/oak_client_android_app.sh)	48m 47s
build_attest_all (buildconfigs/oak_containers_agent.sh)	5m 15s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	28m 26s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	8m 7s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	5m 38s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	6m 53s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	13m 49s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	16m 5s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	3m 51s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	3m 48s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	4m 8s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	4m 4s
build_attest_all (buildconfigs/oak_orchestrator.sh)	4m 3s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	16m 12s
build_attest_all (buildconfigs/stage0_bin.sh)	40m 19s
	3h 33m 32s

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