Returns a list containing all [key, value]s in a util/map/hashmap.
Since: 3.0
Parameters
map: The map.
Examples
use <util/map/hashmap.scad>;
use <util/map/hashmap_entries.scad>;
m = hashmap([["k1", 10], ["k2", 20], ["k3", 30]]);
echo(hashmap_entries(m)); // a list contains ["k1", 10], ["k2", 20], ["k3", 30]