## Is your feature request related to a problem?

Currently the funnel time to convert query (added in #4947) only allows measuring time it took to a specific step from the one immediately preceding it. However it'd be useful to also bin by the _total_ time to convert – how long it took to complete the funnel (reach the last step) from entering it (reaching the first step).

## Describe the solution you'd like

Right now `ClickhouseFunnelTimeToConvert` uses only `Filter.funnel_to_step`. It should also be able to work with `Filter.funnel_from_step`. If `funnel_from_step` is `0` and `funnel_to_step` is `len(steps)-1`, that'd be the total time to convert.

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

ee/clickhouse/queries/funnels/test/test_funnel_time_to_convert.py
from uuid import uuid4
from ee.clickhouse.models.event import create_event
from ee.clickhouse.queries.funnels import ClickhouseFunnel, ClickhouseFunnelStrict, ClickhouseFunnelUnordered
from ee.clickhouse.queries.funnels.funnel_time_to_convert import ClickhouseFunnelTimeToConvert
from ee.clickhouse.util import ClickhouseTestMixin
from posthog.constants import INSIGHT_FUNNELS, TRENDS_LINEAR
from posthog.models.filters import Filter
from posthog.models.person import Person
from posthog.test.base import APIBaseTest
FORMAT_TIME = "%Y-%m-%d %H:%M:%S"
FORMAT_TIME_DAY_END = "%Y-%m-%d 23:59:59"
def _create_person(**kwargs):
    person = Person.objects.create(**kwargs)
    return Person(id=person.uuid, uuid=person.uuid)
def _create_event(**kwargs):
    kwargs.update({"event_uuid": uuid4()})
    create_event(**kwargs)
class TestFunnelTrends(ClickhouseTestMixin, APIBaseTest):