Build oak_proto_rust for bare metal with Bazel. #27

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	2m 11s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	10m 52s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	6m 36s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	3m 47s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	5m 37s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	11m 39s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	2m 16s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	2m 14s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	2m 31s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	2m 26s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	2m 53s
build_attest_all (buildconfigs/stage0_bin.sh)	2m 30s
build_attest_all (buildconfigs/oak_orchestrator.sh)	2m 7s
	57m 39s

Provide feedback