Lantmäteriet geo data added
Apiverket now exposes Swedish elevation, administrative geography, and official place names through clean JSON endpoints.
- Elevation lookups use Lantmäteriet Markhöjd Direkt behind `/v1/geo/elevation`.
- Municipality, county, and country endpoints use Lantmäteriet Kommun, Län och Rike Direkt.
- Place-name search and references use Lantmäteriet Ortnamn Direkt v2.2.
- Responses use WGS84-friendly inputs and stable Apiverket metadata while keeping raw source geometry out of default responses.