**Description**

I have noticed that the stable REST API doesn't have the ability to run a task (which is possible from the airflow web interface.
I think it would be nice to have either:
- Run task 
- Run all failing tasks (rerun from point of failure)
this ability for integrations.

**Use case / motivation**

I would like the ability to identify the failing tasks on a specific DAG Run and rerun only them.
I would like to do it remotely (non-interactive) using the REST API.
I could write a script that run only the failing tasks, but I couldn't find a way to "Run" a task, when I have the task instance ID.

**Are you willing to submit a PR?**

Not at this stage

**Related Issues**



tests/api_connexion/endpoints/test_task_instance_endpoint.py
"/api/v1/dags/~/dagRuns/~/taskInstances/list",
            environ_overrides={"REMOTE_USER": "test"},
            json=payload,
        )
        assert response.status_code == 200, response.json
        assert expected_ti_count == response.json["total_entries"]
        assert expected_ti_count == len(response.json["task_instances"])
    @parameterized.expand(
        [
            (
                "with dag filter",
                {"dag_ids": ["example_python_operator", "example_skip_dag"]},
                15,
                15,
            ),
        ],
    )
    @provide_session
    def test_should_respond_200_dag_ids_filter(self, _, payload, expected_ti, total_ti, session):
        self.create_task_instances(session)
        self.create_task_instances(session, dag_id="example_skip_dag")
        response = self.client.post(
            "/api/v1/dags/~/dagRuns/~/taskInstances/list",
            environ_overrides={"REMOTE_USER": "test"},
            json=payload,
        )
        assert response.status_code == 200
        assert len(response.json["task_instances"]) == expected_ti
        assert response.json["total_entries"] == total_ti
    def test_should_raises_401_unauthenticated(self):