**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
self, _, main_dag, task_instances, request_dag, payload, expected_ti, session
    ):
        self.create_task_instances(
            session,
            dag_id=main_dag,
            task_instances=task_instances,
            update_extras=False,
            single_dag_run=False,
        )
        self.app.dag_bag.sync_to_db()  
        response = self.client.post(
            f"/api/v1/dags/{request_dag}/clearTaskInstances",
            environ_overrides={"REMOTE_USER": "test"},
            json=payload,
        )
        assert response.status_code == 200
        assert len(response.json["task_instances"]) == expected_ti
    def test_should_respond_200_with_reset_dag_run(self, session):