Feature request: Add timepicker element to datetime query parameters

[Arrow7000]

It would make testing out queries much simpler than the current state of having to manually type in a full explicit datetime string consisting of 26(!) characters every time you want to play around with a query 😰

It should be as straightforward as making fields of type datetime be a datetime-local field, perhaps with some logic to ensure the selected time is in UTC instead of the local timezone