### Body

The CLI:

`airflow variables set [-h] [-j] [-v] key VALUE`

https://airflow.apache.org/docs/apache-airflow/stable/cli-and-env-variables-ref.html#set_repeat1

Doesn't support adding description though column exists and we support it from Rest API:
https://airflow.apache.org/docs/apache-airflow/stable/stable-rest-api-ref.html#operation/post_variables

**The Task:**

Allow to set description from cli command

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
func=lazy_load_command("airflow.cli.commands.kubernetes_command.generate_pod_yaml"),
        args=(ARG_DAG_ID, ARG_EXECUTION_DATE, ARG_SUBDIR, ARG_OUTPUT_PATH, ARG_VERBOSE),
    ),
)
JOBS_COMMANDS = (
    ActionCommand(
        name="check",
        help="Checks if job(s) are still alive",
        func=lazy_load_command("airflow.cli.commands.jobs_command.check"),
        args=(
            ARG_JOB_TYPE_FILTER,
            ARG_JOB_HOSTNAME_FILTER,
            ARG_JOB_HOSTNAME_CALLABLE_FILTER,
            ARG_JOB_LIMIT,
            ARG_ALLOW_MULTIPLE,
            ARG_VERBOSE,
        ),
        epilog=(
            "examples:\n"
            "To check if the local scheduler is still working properly, run:\n"
            "\n"
            '    $ airflow jobs check --job-type SchedulerJob --local"\n'
            "\n"
            "To check if any scheduler is running when you are using high availability, run:\n"
            "\n"
            "    $ airflow jobs check --job-type SchedulerJob --allow-multiple --limit 100"
        ),
    ),
)
core_commands: list[CLICommand] = [