message: follow_me: fix rounding
diff: #include "system.h"
  #include "global_include.h"
  #include "px4_custom_mode.h"
  +#include <cmath>
  namespace dronecode_sdk {
  @@ -253,8 +254,8 @@ void FollowMeImpl::send_target_location()
  // LogDebug() << debug_str << "Lat: " << _target_location.latitude_deg << " Lon: " <<
  // _target_location.longitude_deg <<
  // " Alt: " << _target_location.absolute_altitude_m;
  - const int32_t lat_int = static_cast<int32_t>(_target_location.latitude_deg * 1e7);
  - const int32_t lon_int = static_cast<int32_t>(_target_location.longitude_deg * 1e7);
  + const int32_t lat_int = std::round(_target_location.latitude_deg * 1e7);
  + const int32_t lon_int = std::round(_target_location.longitude_deg * 1e7);
  const float alt = static_cast<float>(_target_location.absolute_altitude_m);
  _mutex.unlock();
  