Add OpenSSH certificate signing path

crates/geth-ssh-identity/src/lib.rs

@@ -142,6 +142,8 @@ pub struct SshCertApproval {
     pub serial: Option<u64>,
     pub output_path: Option<String>,
     pub signing_command: Vec<String>,
+    pub signed: bool,
+    pub certificate_id: Option<SshCertId>,
     pub note: String,
 }