**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/example_python_operator/dagRuns/TEST_DAG_RUN_ID"
                    "/taskInstances?queue=test_queue_1,test_queue_2"
                ),
                2,
            ),
            (
                "test queue filter ~",
                [
                    {"queue": "test_queue_1"},
                    {"queue": "test_queue_2"},
                    {"queue": "test_queue_3"},
                ],
                True,
                "/api/v1/dags/~/dagRuns/~/taskInstances?queue=test_queue_1,test_queue_2",
                2,
            ),
        ]
    )
    @provide_session
    def test_should_respond_200(self, _, task_instances, update_extras, url, expected_ti, session):
        self.create_task_instances(
            session,
            update_extras=update_extras,
            task_instances=task_instances,
        )
        response = self.client.get(url, environ_overrides={"REMOTE_USER": "test"})
        assert response.status_code == 200
        assert response.json["total_entries"] == expected_ti
        assert len(response.json["task_instances"]) == expected_ti
    def test_should_respond_200_for_dag_id_filter(self, session):