Get elevation from GPS coordinates

Retrieves ground elevation data for given GPS coordinates using the SRTM 250 model at Open-Elevation API web service.

This function queries the Open-Elevation API web service for ground elevations. The web service uses the SRTM 250 digital elevation database, which results from the NASA Shuttle Radar Topographic Mission (SRTM) and has a resolution of 250 m at the equator.

Key features:

• Requires an internet connection to function properly.
• Works without the need for an API token.
• Accepts both 1D and 2D numeric arrays.
• Handles large queries by dividing them into smaller batches.