## Is your feature request related to a problem?

I want to be able to download a CSV of users when I click on a datapoint in a graph

## Describe the solution you'd like

![image](https://user-images.githubusercontent.com/1727427/114418453-cd8d3700-9bb2-11eb-906d-8aa424f48500.png)

When I click on a datapoint I'd like to be able to download a CSV as well as create a cohort from it.

## Describe alternatives you've considered



## Additional context



#### *Thank you* for your feature request – we love each and every one!

posthog/api/action.py
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_hooks.signals import raw_hook_event
from posthog.api.routing import StructuredViewSetMixin
from posthog.api.shared import UserBasicSerializer
from posthog.api.utils import get_target_entity
from posthog.auth import PersonalAPIKeyAuthentication, TemporaryTokenAuthentication
from posthog.celery import update_cache_item_task
from posthog.constants import INSIGHT_STICKINESS, TREND_FILTER_TYPE_ACTIONS, TREND_FILTER_TYPE_EVENTS, TRENDS_STICKINESS
from posthog.decorators import CacheType, cached_function
from posthog.models import (
    Action,
    ActionStep,
    CohortPeople,
    DashboardItem,
    Entity,
    Event,
    Filter,
    Person,
    RetentionFilter,
)
from posthog.models.event import EventManager
from posthog.models.filters.stickiness_filter import StickinessFilter
from posthog.models.team import Team
from posthog.permissions import ProjectMembershipNecessaryPermissions
from posthog.queries import base, retention, stickiness, trends
from posthog.tasks.calculate_action import calculate_action
from posthog.utils import generate_cache_key, get_safe_cache
from .person import PersonSerializer, paginated_result
class ActionStepSerializer(serializers.HyperlinkedModelSerializer):