Add support for DuckDB vector tiles

[giswqs]

The DuckDB spatial extension will soon supports vector tile serve. It should be great to integrate this into leafmap.

https://gist.github.com/Maxxen/37e4a9f8595ea5e6a20c0c8fbbefe955

duckdb/duckdb-spatial#241

https://github.com/bmcandr/fast-geoparquet-features