Add OID for RPKI id-ct-signedChecklist

Add OID for RPKI id-ct-signedChecklist

References: draft-ietf-sidrops-rpki-rsc - Resource Public Key Infrastructure
(RPKI) object profile for Signed Checklist (RSC)

OID listed under 'SMI Security for S/MIME CMS Content Type (1.2.840.113549.1.9.16.1)'
https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml#security-smime-1

CLA: Trivial

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15207)