https://github.com/apache/airflow/pull/27892 added Internal API as part of Webserver.

We need to introduce `airlfow internal-api` CLI command that starts Internal API as a independent component.
args=(ARG_VAR, ARG_VERBOSE),
    ),
    ActionCommand(
        name="import",
        help="Import variables",
        func=lazy_load_command("airflow.cli.commands.variable_command.variables_import"),
        args=(ARG_VAR_IMPORT, ARG_VERBOSE),
    ),
    ActionCommand(
        name="export",
        help="Export all variables",
        func=lazy_load_command("airflow.cli.commands.variable_command.variables_export"),
        args=(ARG_VAR_EXPORT, ARG_VERBOSE),
    ),
)
DB_COMMANDS = (
    ActionCommand(
        name="init",
        help="Initialize the metadata database",
        func=lazy_load_command("airflow.cli.commands.db_command.initdb"),
        args=(ARG_VERBOSE,),
    ),
    ActionCommand(
        name="check-migrations",
        help="Check if migration have finished",
        description="Check if migration have finished (or continually check until timeout)",
        func=lazy_load_command("airflow.cli.commands.db_command.check_migrations"),
        args=(ARG_MIGRATION_TIMEOUT, ARG_VERBOSE),
    ),
    ActionCommand(