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.
ActionCommand(
        name="export",
        help="Export all pools",
        func=lazy_load_command("airflow.cli.commands.pool_command.pool_export"),
        args=(ARG_POOL_EXPORT, ARG_VERBOSE),
    ),
)
VARIABLES_COMMANDS = (
    ActionCommand(
        name="list",
        help="List variables",
        func=lazy_load_command("airflow.cli.commands.variable_command.variables_list"),
        args=(ARG_OUTPUT, ARG_VERBOSE),
    ),
    ActionCommand(
        name="get",
        help="Get variable",
        func=lazy_load_command("airflow.cli.commands.variable_command.variables_get"),
        args=(ARG_VAR, ARG_DESERIALIZE_JSON, ARG_DEFAULT, ARG_VERBOSE),
    ),
    ActionCommand(
        name="set",
        help="Set variable",
        func=lazy_load_command("airflow.cli.commands.variable_command.variables_set"),
        args=(ARG_VAR, ARG_VAR_VALUE, ARG_SERIALIZE_JSON, ARG_VERBOSE),
    ),
    ActionCommand(
        name="delete",
        help="Delete variable",
        func=lazy_load_command("airflow.cli.commands.variable_command.variables_delete"),