BIO_printf refactor for RSA certificate display #252

Job	Run time
build_wolfprovider (v5.8.0-stable, openssl-3.5.0) / Build wolfProvider	45s
build_wolfprovider (master, openssl-3.5.0) / Build wolfProvider	40s
test_libssh2 (libssh2-1.10.0, v5.8.0-stable, openssl-3.5.0)	1m 17s
test_libssh2 (libssh2-1.10.0, master, openssl-3.5.0, WOLFPROV_FORCE_FAIL=1)	57s
test_libssh2 (libssh2-1.10.0, master, openssl-3.5.0)	1m 5s
test_libssh2 (libssh2-1.10.0, v5.8.0-stable, openssl-3.5.0, WOLFPROV_FORCE_FAIL=1)	56s
	5m 40s

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