Add weather routes project progress

WeatherRoutes/mvc/controller/networkmanager.h

@@ -0,0 +1,22 @@
+#ifndef NETWORKMANAGER_H
+#define NETWORKMANAGER_H
+
+#include <QObject>
+
+class NetworkManager : public QObject {
+  Q_OBJECT
+public:
+  void fetchJSONfromAPI(QUrl url, QJsonDocument &doc);
+  static NetworkManager *m_instance;
+  static NetworkManager *Instance();
+
+    NetworkManager(const NetworkManager&) = delete;
+    NetworkManager& operator=(const NetworkManager&) = delete;
+
+signals:
+
+private:
+  explicit NetworkManager(QObject *parent = nullptr);
+};
+
+#endif // NETWORKMANAGER_H