Method get_external_device_count

OpenHD/ohd_common/src/openhd_external_device.cpp:123–125

}

uint8_t openhd::ExternalDeviceManager::get_external_device_count() {
  return m_external_device_count;
}

std::string openhd::ExternalDevice::to_string() const {
  // return fmt::format("ExternalDevice {} [local:[{}]