Show summary of trusted certificates, add /tls cert <fingerprint>

fixes #676

src/ui/console.c

@@ -188,6 +188,18 @@ cons_show_error(const char *const msg, ...)
     cons_alert();
 }
 
+void
+cons_show_tlscert_summary(TLSCertificate *cert)
+{
+    if (!cert) {
+        return;
+    }
+
+    cons_show("Subject     : %s", cert->subject_commonname);
+    cons_show("Issuer      : %s", cert->issuer_commonname);
+    cons_show("Fingerprint : %s", cert->fingerprint);
+}
+
 void
 cons_show_tlscert(TLSCertificate *cert)
 {