### Description

Currently Airflow has a `Filter Upstream` View/option inside the graph view. (As documented [here](https://docs.astronomer.io/learn/airflow-ui#graph-view) under `Filter Upstream`)

<img width="682" alt="image" src="https://user-images.githubusercontent.com/9246654/211711759-670a1180-7f90-4ecd-84b0-2f3b290ff477.png">

It would be great if there were also the options
1. `Filter Downstream` &
2. `Filter Downstream & Upstream`

### Use case/motivation

Sometimes it is useful to view downstream tasks & down & upstream tasks when reviewing dags. This feature would make it as easy to view those as it is to view upstream today.

### Related issues

I found nothing with a quick search

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

"""Scheduled slots rendering."""
        pool_id = self.get("pool")
        scheduled_slots = self.get("scheduled_slots")
        if pool_id is not None and scheduled_slots is not None:
            url = url_for("TaskInstanceModelView.list", _flt_3_pool=pool_id, _flt_3_state="scheduled")
            return Markup("<a href='{url}'>{scheduled_slots}</a>").format(
                url=url, scheduled_slots=scheduled_slots
            )
        else:
            return Markup('<span class="label label-danger">Invalid</span>')
    formatters_columns = {
        "pool": pool_link,
        "running_slots": frunning_slots,
        "queued_slots": fqueued_slots,
        "scheduled_slots": fscheduled_slots,
    }
    validators_columns = {"pool": [validators.DataRequired()], "slots": [validators.NumberRange(min=-1)]}
def _can_create_variable() -> bool:
    return get_airflow_app().appbuilder.sm.has_access(
        permissions.ACTION_CAN_CREATE, permissions.RESOURCE_VARIABLE
    )
class VariableModelView(AirflowModelView):