add map accessor to Database; move cork interface

Signed-off-by: Jason Volk <jason@zemos.net>

src/admin/debug/commands.rs

@@ -838,7 +838,7 @@ pub(super) async fn database_stats(
 	let map_name = map.as_ref().map_or(EMPTY, String::as_str);
 
 	let mut out = String::new();
-	for (name, map) in self.services.db.iter_maps() {
+	for (name, map) in self.services.db.iter() {
 		if !map_name.is_empty() && *map_name != *name {
 			continue;
 		}