build

add INI config file support via libinih #279

Job	Run time
build (mbedtls, MBEDTLS, libmbedtls-dev)	15s
build (wolfssl, WOLFSSL, libwolfssl-dev)	19s
build (none, none)	16s
build (openssl, OPENSSL, libssl-dev)	18s
	1m 8s

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