allow arrayref and hashref parameters in API

GitLab/API.pm

@@ -203,7 +203,17 @@ sub create_uri {
     # add query parameters
     foreach my $param (@{$tmpl->{query} // []}) {
         if (exists $args->{$param}) {
-            $uri->query_param($param => $args->{$param});
+            if (ref $args->{$param} eq "ARRAY") {
+                foreach my $val (@{ $args->{$param} }) {
+                    $uri->query_param_append($param, $val);
+                }
+            } elsif (ref $args->{$param} eq "HASH") {
+                while (my ($key, $val) = each %{$args->{$param}}) {
+                    $uri->query_param_append("$param\[$key\]", $val);
+                }
+            } else {
+                $uri->query_param_append($param => $args->{$param});
+            }
             delete $args->{$param};
         }
     }