Show indoor=yes (at least for clocks) in quest

[HolgerJeromin]

Use case
I got the "Survey if places still exist" quest on this indoor clock:
https://www.openstreetmap.org/node/8648925337

I was really happy that I got the outside front building clock highlighted to be sure that this node was not misplaced:
https://www.openstreetmap.org/node/3323583513

But I thought there would be another clock at another side of the outside building I had to check.

Proposed Solution
Having indoor=yes shown somewhere would help me a lot to be able to solve the quest without errors.

[westnordost]

I am really not sure if this tag is consistently used on all indoor things that it would make sense to make the user expect it by always displaying it. E.g. I think most shops in a mall do not have indoor=yes set.

So when indoor=yes is missing on a clock, wouldn't users who have seen a location-text like "Something (variety store) - indoor" also expect that if "indoor" is not mentioned, it will surely be outside? However, this is not the case when the tag is missing.

[HolgerJeromin]

I would add this information only one small things which are hard to find. But yes, this could be a problem with familiarization which can be missing the next time

[westnordost]

Small things that are hard to find... well, maybe it would be helpful to have a quest that asks whether such a thing is indoor or not when it is inside a building outline (and does also not have level etc. tagged) and have that quest a higher priority than others asking things about these.

If this quest is implemented, then showing a "(indoor)" hint could be revisited. Feel free to create a quest request ticket for that. This ticket I'll close for now.

[westnordost]

Should not be implemented before #5175

[HolgerJeromin]

now unblocked