fix for Qt6

MapView add contrast property
MapView fix plugin

libs/map/plugin/mapplugin.cpp

@@ -1,6 +1,7 @@
 #include "mapplugin.h"
 
 #include "mapview.h"
+#include "mapview_tile_provider_osm.h"
 
 #include <QtCore/QtPlugin>
 
@@ -26,6 +27,7 @@ bool MapPlugin::isInitialized() const {
 
 QWidget * MapPlugin::createWidget(QWidget * parent) {
 	MapView * w = new MapView(parent);
+	w->setTileProvider(new MapViewTileProvider_OSM());
 	return w;
 }