GeoLibre tile + service proxy.
  Passthrough: /opm/<dataset>/<z>/<x>/<y>.png
    Datasets: mars-mola-color-noshade, mars-viking-mdim21, mars-hillshade, mars-mola-color, mars-mola-gray, moon-hillshaded-albedo
  Reprojected WMS: /wms/<dataset>/<z>/<x>/<y>.png
    Datasets: mercury-messenger-color, mercury-messenger, venus-magellan, venus-magellan-color, io-galileo-color, europa-galileo-voyager, ganymede-galileo-voyager, callisto-galileo-voyager, titan-cassini, titan-hisar, pluto-mosaic, pluto-color, charon-mosaic
  OpenAerialMap search: /oam/meta?bbox=...&limit=...
  NASA Earthdata granule download: /earthdata/download?url=... (Authorization: Bearer)
  CKAN search: /ckan/search?q=...&rows=...&start=...
  CelesTrak TLE groups: /celestrak/<group>
  Launch Library 2 recent missions: /launch-library/recent
  OpenSky live flights: /opensky/states
  adsb.lol military flights: /adsb-lol/military
  ADSBDB aircraft details: /adsbdb/aircraft/<icao>
  GTFS-Realtime transit: /transit/vehicles/<provider>
  NASA FIRMS active fires (24 h): /firms/viirs/<satellite>
  OpenStreetMap download: POST /overpass
  Source Cooperative metadata: /source-coop/products/... , /source-coop/feed
  GitHub repository file: /github-raw?url=https://github.com/.../raw/...
  Ocean Data Platform: /odp/tiles/<uuid>/<z>/<x>/<y>.pbf , /odp/features/<uuid>/items
  PMTiles range proxy: /pmtiles/<name>.pmtiles (Range header required)