Merge "aconfig: rename subcommand 'dump' -> 'dump-cache'" into main

                .arg(Arg::new("out").long("out").default_value("-")),

        )

        .subcommand(

            Command::new("dump")

            Command::new("dump-cache")

                .alias("dump")

                .arg(Arg::new("cache").long("cache").action(ArgAction::Append))

                .arg(

                    Arg::new("format")

            let path = get_required_arg::<String>(sub_matches, "out")?;

            write_output_to_file_or_stdout(path, &output)?;

        }

        Some(("dump", sub_matches)) => {

        Some(("dump-cache", sub_matches)) => {

            let input = open_zero_or_more_files(sub_matches, "cache")?;

            let format = get_required_arg::<DumpFormat>(sub_matches, "format")

                .context("failed to dump previously parsed flags")?;