persitent cache for image download

src/app.cpp

@@ -4,6 +4,7 @@
 #include <vector>
 #include "services/dbus/notification.hpp"
 #include "services/dbus/mpris.hpp"
+#include "services/textureCache.hpp"
 
 App::App() {
     this->app = Gtk::Application::create("org.example.mybar");
@@ -43,6 +44,7 @@ App::App() {
 }
 
 void App::setupServices() {
+    TextureCacheService::getInstance()->pruneCache();
 
     this->trayService->start();
 }