make kestrel a tak server, so that it can send and receive pois as cots data

scripts/gen-dev-cert.sh

@@ -31,6 +31,7 @@ openssl req -x509 -newkey rsa:2048 -keyout "$KEY" -out "$CERT" -days 365 -nodes
 echo "Created $KEY and $CERT"
 echo ""
 echo "Next: run  npm run dev"
+echo "  (dev HTTPS and CoT TAK server TLS on port 8089 will use these certs)"
 if [ "$IP" != "127.0.0.1" ] && [ "$IP" != "localhost" ]; then
   echo "On your phone: open  https://${IP}:3000  (accept the security warning once)"
 fi