IWYU: Convert FAPI tests #126

Job	Run time
test-coverage	2m 12s
scanbuild	4m 58s
coverity-test	0s
build-test (ubuntu-20.04, gcc)	1m 58s
test-fuzz	2m 37s
build-test (ubuntu-20.04, clang)	2m 2s
build-test (fedora-32, gcc)	1m 57s
test-no-crypto-build	1m 19s
test-mbedtls (ubuntu-20.04)	1m 18s
build-test (fedora-32, clang)	2m 4s
test-tcti-config	1m 18s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	1m 19s
build-test (opensuse-leap, gcc)	2m 9s
build-test (opensuse-leap, clang)	2m 4s
build-test (ubuntu-22.04, gcc)	2m 3s
build-test (ubuntu-22.04, clang)	2m 3s
build-test (alpine-3.15, gcc)	1m 48s
build-test (alpine-3.15, clang)	2m 5s
	35m 14s

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