Navigator: allow executing a disarm command during a mission

src/modules/navigator/MissionFeasibility/FeasibilityChecker.cpp

@@ -263,6 +263,7 @@ bool FeasibilityChecker::checkMissionItemValidity(mission_item_s &mission_item,
 	    mission_item.nav_cmd != NAV_CMD_DO_LAND_START &&
 	    mission_item.nav_cmd != NAV_CMD_DO_TRIGGER_CONTROL &&
 	    mission_item.nav_cmd != NAV_CMD_DO_DIGICAM_CONTROL &&
+	    mission_item.nav_cmd != NAV_CMD_COMPONENT_ARM_DISARM &&
 	    mission_item.nav_cmd != NAV_CMD_IMAGE_START_CAPTURE &&
 	    mission_item.nav_cmd != NAV_CMD_IMAGE_STOP_CAPTURE &&
 	    mission_item.nav_cmd != NAV_CMD_VIDEO_START_CAPTURE &&

src/modules/navigator/mission_block.cpp

@@ -82,6 +82,7 @@ MissionBlock::is_mission_item_reached_or_completed()
 	case NAV_CMD_DO_MOUNT_CONFIGURE:
 	case NAV_CMD_DO_MOUNT_CONTROL:
 	case NAV_CMD_DO_GIMBAL_MANAGER_CONFIGURE:
+	case NAV_CMD_COMPONENT_ARM_DISARM:
 	case NAV_CMD_DO_SET_ROI:
 	case NAV_CMD_DO_SET_ROI_LOCATION:
 	case NAV_CMD_DO_SET_ROI_WPNEXT_OFFSET:
@@ -95,6 +96,7 @@ MissionBlock::is_mission_item_reached_or_completed()
 	case NAV_CMD_SET_CAMERA_FOCUS:
 	case NAV_CMD_DO_CHANGE_SPEED:
 	case NAV_CMD_DO_SET_HOME:
+
 		return true;
 
 	// Indefinite Waypoints

src/modules/navigator/navigation.h

@@ -76,6 +76,7 @@ enum NAV_CMD {
 	NAV_CMD_DO_SET_CAM_TRIGG_INTERVAL = 214,
 	NAV_CMD_DO_SET_CAM_TRIGG_DIST = 206,
 	NAV_CMD_OBLIQUE_SURVEY = 260,
+	NAV_CMD_COMPONENT_ARM_DISARM = 400,
 	NAV_CMD_SET_CAMERA_MODE = 530,
 	NAV_CMD_SET_CAMERA_SOURCE = 534,
 	NAV_CMD_SET_CAMERA_ZOOM = 531,