first pass on overpass api, still getting an error with columns

src/pg/sql/60_observatory_providers.sql

@@ -0,0 +1,7 @@
+CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetOverpass(query text)
+RETURNS table (lat Numeric, lon Numeric, "type" TEXT, id Numeric, tags TEXT) as $$
+
+    from observatory.osm import get_overpass
+    return get_overpass(query)
+
+$$ LANGUAGE plpythonu;