maps.helpers.ts and osm.client.ts had grown past the 1000-line limit. The
merge behind the search and suggestion lists, with its lead rules, moves to
maps-merge.helpers.ts; the search records and Photon's half of the
OpenStreetMap geocoding (search, suggestions, airport codes, identity,
reverse, element details) move to osm-geocoding.ts. OsmClient keeps the
same methods and hands them on, so no caller changes.
Maurice
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