yaml-mu: implement simple tpm2b marhsal/unmarshal #226

Job	Run time
test-coverage	1m 26s
coverity-test	0s
scanbuild	1m 25s
build-test (ubuntu-20.04, gcc)	1m 23s
build-test (ubuntu-20.04, clang)	1m 31s
test-fuzz	1m 29s
test-mbedtls (ubuntu-20.04)	1m 17s
build-test (fedora-32, gcc)	1m 27s
test-no-crypto-build	1m 30s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	1m 21s
build-test (fedora-32, clang)	1m 30s
test-tcti-config	1m 33s
build-test (opensuse-leap, gcc)	1m 31s
build-test (opensuse-leap, clang)	1m 32s
build-test (ubuntu-22.04, gcc)	1m 29s
build-test (ubuntu-22.04, clang)	1m 24s
build-test (alpine-3.15, gcc)	1m 16s
build-test (alpine-3.15, clang)	1m 21s
	24m 25s

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