Function create_certificate 

pub fn create_certificate(
    default_spec: Option<MaterializeCertSpec>,
    resource: &impl ManagedResource,
    mz_cert_spec: Option<MaterializeCertSpec>,
    cert_name: String,
    secret_name: String,
    additional_dns_names: Option<Vec<String>>,
    algorithm_hint: CertificatePrivateKeyAlgorithm,
    size_hint: Option<i64>,
) -> Result<Option<Certificate>>