Replace key filter with query syntax and add sorting to property time intervals

[brookfxg]

Changelog

Revise device property history time interval list to use query instead of key, accept sortBy, sortOrder

Docs

None

Description

We had a late revision to the interface for the upcoming device property history time interval. The old interface provided a simple key filter. We've revised that to take the standard query syntax. Also we now support sorting.

Testing

Another custom test script to simulate use

[linear]

FG-14184 update python library with new query syntax

[claude]

Clean change — follows established patterns for sort_by/sort_order/query from other list endpoints. comma_separated_query_param removal is safe (no other callers).

Two minor things:

1. PR title — "revise query add sort to prop time intervals list" is a bit telegraphic. Something like "Replace key filter with query syntax and add sorting to property time intervals" would be clearer for the squash-merge commit.

2. Docs link — the query docstring references https://docs.foxglove.dev/api#tag/Devices/paths/~1devices/get (the devices list endpoint). Is query syntax actually documented there for property time intervals, or should this point to the property-time-intervals endpoint specifically? The get_events method has the same pattern (pointing to its own endpoint), so this is fine if the syntax definition lives on the devices page — just want to make sure users won't land on an unrelated section.