IWYU: Convert FAPI tests #136

Job	Run time
build-test (ubuntu-20.04, gcc)	4m 42s
scanbuild	6m 37s
build-test (ubuntu-20.04, clang)	4m 20s
test-coverage	4h 47m 57s
build-test (fedora-32, gcc)	4m 40s
test-mbedtls (ubuntu-20.04)	2m 50s
test-no-crypto-build	1m 31s
build-test (fedora-32, clang)	5m 0s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	2m 42s
test-tcti-config	14m 24s
build-test (opensuse-leap, gcc)	4m 33s
coverity-test	0s
build-test (opensuse-leap, clang)	4m 48s
test-fuzz	2m 39s
build-test (ubuntu-22.04, gcc)	4m 42s
build-test (ubuntu-22.04, clang)	4m 34s
build-test (alpine-3.15, gcc)	3m 54s
build-test (alpine-3.15, clang)	4m 54s
	6h 4m 47s

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