Integrate radio-delivered convoy cover and conservative squad ammunition reports

tests/test_hq_assignment_lifecycle.py

@@ -38,6 +38,7 @@ struct ERR_HQUnit {
  SCR_AIGroup* Group=nullptr;AIWaypoint* Waypoint=nullptr;
  ERR_HQTask *Task=nullptr,*PendingTask=nullptr;
  ERR_HQReport *Assignment=nullptr,*PendingOrder=nullptr;
+ void* PendingConvoyOrder=nullptr;
  ERR_HQRoute* Downlink=nullptr;bool PendingCheckin=false;
 '''+adapt(unit)+r'''};
 struct Watch {int calls=0;std::string source;int message=0,request=0;