bluetooth: add bluetooth integration

Missing support for things that require an agent, but has most basics.

Closes #17

src/dbus/objectmanager.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <qdbusconnection.h>
+#include <qobject.h>
+#include <qstring.h>
+#include <qtmetamacros.h>
+
+#include "dbus_objectmanager_types.hpp"
+
+class DBusObjectManagerInterface;
+
+namespace qs::dbus {
+
+class DBusObjectManager: public QObject {
+	Q_OBJECT;
+
+public:
+	explicit DBusObjectManager(QObject* parent = nullptr);
+
+	bool setInterface(
+	    const QString& service,
+	    const QString& path,
+	    const QDBusConnection& connection = QDBusConnection::sessionBus()
+	);
+
+signals:
+	void
+	interfacesAdded(const QDBusObjectPath& objectPath, const DBusObjectManagerInterfaces& interfaces);
+	void interfacesRemoved(const QDBusObjectPath& objectPath, const QStringList& interfaces);
+
+private:
+	void fetchInitialObjects();
+
+	DBusObjectManagerInterface* mInterface = nullptr;
+};
+
+} // namespace qs::dbus