example 'meshtastic': add android background service for BLE

examples/meshtastic/cpp/android_service/main.cpp

@@ -0,0 +1,16 @@
+#include "qtandroidservice_ro.h"
+#include "../ble/ble_meshtastic.h"
+#include <QAndroidService>
+
+int main(int argc, char* argv[]) {
+  QAndroidService app(argc, argv);
+
+  QRemoteObjectHost srcNode(QUrl(QStringLiteral("local:replica")));
+  QtAndroidService qtAndroidService;
+  srcNode.enableRemoting(&qtAndroidService);
+
+  BLE_ME ble(&qtAndroidService);
+  qtAndroidService.ble = &ble;
+
+  return app.exec();
+}