### Body

There are some use cases where users want to trigger new DAG run as soon as one finished. This is a request I've seen several times with some variations (for example like this [Stackoverflow question](https://stackoverflow.com/q/75623153/14624409)) but the basic request is the same.

The workaround users do to get such functionality is place `TriggerDagRunOperator` as last task of their DAG invoking the same DAG:

```
from datetime import datetime

from airflow import DAG
from airflow.operators.empty import EmptyOperator
from airflow.operators.trigger_dagrun import TriggerDagRunOperator

with DAG(
    dag_id="example",
    start_date=datetime(2023, 1, 1,),
    catchup=False,
    schedule=None,
) as dag:
    task = EmptyOperator(task_id="first")
    trigger = TriggerDagRunOperator(
        task_id="trigger",
        trigger_dag_id="example",
    )

    task >> trigger

```

As you can see this works nicely:
![Screenshot 2023-03-03 at 14 20 51](https://user-images.githubusercontent.com/45845474/222718862-dfde8a41-24b6-4991-b318-b7f9784514f6.png)

My suggestion is to add first class support for this use case, so the above example will be changed to:

```

from datetime import datetime

from airflow import DAG
from airflow.operators.empty import EmptyOperator
from airflow.operators.trigger_dagrun import TriggerDagRunOperator

with DAG(
    dag_id="example",
    start_date=datetime(2023, 1, 1,),
    catchup=False,
    schedule="@continues",
) as dag:
    task = EmptyOperator(task_id="first")
```

I guess it won't exactly be `"@continues"` but more likely new [ScheduleArg](https://github.com/apache/airflow/blob/8b8552f5c4111fe0732067d7af06aa5285498a79/airflow/models/dag.py#L127) type but I show it like that just for simplification of the idea.

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
assert orm_dag_owners == expected_owners
        
        dag = DAG(
            "dag",
            start_date=DEFAULT_DATE,
        )
        dag.sync_to_db(session=session)
        orm_dag_owners = session.query(DagOwnerAttributes).all()
        assert not orm_dag_owners
        
        with pytest.raises(AirflowException):
            DAG("dag", start_date=DEFAULT_DATE, owner_links={"owner1": "my-bad-link"})
    @pytest.mark.parametrize(
        "kwargs",
        [
            {"schedule_interval": "@daily", "schedule": "@weekly"},
            {"timetable": NullTimetable(), "schedule": "@weekly"},
            {"timetable": NullTimetable(), "schedule_interval": "@daily"},
        ],
        ids=[
            "schedule_interval+schedule",
            "timetable+schedule",
            "timetable+schedule_interval",
        ],
    )
    def test_schedule_dag_param(self, kwargs):
        with pytest.raises(ValueError, match="At most one"):
            with DAG(dag_id="hello", **kwargs):
                pass
class TestDagModel: