Differentiate SEAD and SEAD escorts.

SEAD suppresses the package's target. SEAD escort protects the package
from any SAM threat along its flight path.

game/theater/controlpoint.py

@@ -1100,7 +1100,7 @@ class Fob(ControlPoint):
                 FlightType.STRIKE,
                 FlightType.SWEEP,
                 FlightType.ESCORT,
-                FlightType.SEAD,
+                FlightType.SEAD_ESCORT,
             ]
 
     @property

game/theater/missiontarget.py

@@ -37,7 +37,7 @@ class MissionTarget:
             yield from [
                 FlightType.ESCORT,
                 FlightType.TARCAP,
-                FlightType.SEAD,
+                FlightType.SEAD_ESCORT,
                 FlightType.SWEEP,
                 # TODO: FlightType.ELINT,
                 # TODO: FlightType.EWAR,

game/theater/theatergroundobject.py

@@ -452,6 +452,7 @@ class SamGroundObject(BaseDefenseGroundObject):
 
         if not self.is_friendly(for_player):
             yield FlightType.DEAD
+            yield FlightType.SEAD
         yield from super().mission_types(for_player)
 
     @property