**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,
        session,
        dag_id: str = "example_python_operator",
        update_extras: bool = True,
        single_dag_run: bool = True,
        task_instances=None,
        dag_run_state=State.RUNNING,
    ):
        """Method to create task instances using kwargs and default arguments"""
        dag = self.dagbag.get_dag(dag_id)
        tasks = dag.tasks
        counter = len(tasks)
        if task_instances is not None:
            counter = min(len(task_instances), counter)
        for i in range(counter):