In order to warn about unknown CLI flags, all flags need to be migrated to the AnyRemotionOption system. Once all flags are migrated, the CLI can detect and warn about any unrecognized flags passed by the user.
The following flags still need to be refactored to the options system:
--output--frames--quiet / -q--help--force--timeout--concurrencies--browser-args--license-key--image-format (deprecated alias)--png (deprecated, throws error)--quality (deprecated alias)Once all flags are migrated, implement a check that compares parsedCli keys against the known set of AnyRemotionOption cliFlag values and warns (or errors) when an unknown flag is detected.