feat: display total travel distance in map view

Added calculation and display of total distance traveled in the travel map history view. This enhancement provides users with a quick overview of the cumulative distance covered during their journeys. The addition is beneficial for users tracking their travel metrics for personal or record-keeping purposes.

lib/Travelynx/Controller/Traveling.pm

@@ -1342,6 +1342,7 @@ sub map_history {
 		with_polyline => $with_polyline,
 		after         => $filter_from,
 		before        => $filter_until,
+		verbose       => 1
 	);
 
 	if ($filter_type) {
@@ -1357,12 +1358,19 @@ sub map_history {
 			skipped_journeys    => [],
 			station_coordinates => [],
 			polyline_groups     => [],
+			distance_traveled	=> 0,
 		);
 		return;
 	}
 
 	my $include_manual = $self->param('include_manual') ? 1 : 0;
 
+	my $total_distance = 0;
+
+	for my $journey (@journeys) {
+		$total_distance += $journey->{km_route} // 0;
+	}
+
 	my $res = $self->journeys_to_map_data(
 		journeys       => \@journeys,
 		route_type     => $route_type,
@@ -1374,6 +1382,7 @@ sub map_history {
 		year     => $year,
 		with_map => 1,
 		title    => 'travelynx: Karte',
+		total_distance => $total_distance,
 		%{$res}
 	);
 }

templates/history_map.html.ep

@@ -33,6 +33,9 @@
 %= include '_map', station_coordinates => $station_coordinates, polyline_groups => $polyline_groups
 
 %= form_for '/history/map' => begin
+	<p>
+		Gesamtdistanz: <%= sprintf("%.2f", $total_distance // 0) %> km
+	</p>
 	<p>
 		Detailgrad:
 	</p>