Translate box search in ADQL

[gitosaurus]

Feature request

The following AQDL:

SELECT diaObjectId FROM ppdb.DiaObject as diaobj WHERE diaobj.ra >= 186 and diaobj.ra < 187

can be translated to

compute(ppdb.box_search(ra=(186,187), dec=(-90,90))["diaObjectId"])

Technically, it would also work to simply turn the conditions into the DNF filters= or into a .query, but it is much better to detect a box search as such so that the spatial sorting of LSDB can be leveraged.

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