Add first waypoint to FlightData.

The first waypoint is automatically added by pydcs, so it's not
actually in our waypoint list from the flight planner. Import is from
the group so it shows up in the kneeboard.

gen/flights/flight.py

@@ -3,6 +3,8 @@ from typing import List
 
 from game import db
 from dcs.unittype import UnitType
+from dcs.point import MovingPoint, PointAction
+from theater.controlpoint import ControlPoint
 
 
 class FlightType(Enum):
@@ -77,6 +79,33 @@ class FlightWaypoint:
         self.data = None
 
 
+    @classmethod
+    def from_pydcs(cls, point: MovingPoint,
+                   from_cp: ControlPoint) -> "FlightWaypoint":
+        waypoint = FlightWaypoint(point.position.x, point.position.y,
+                                  point.alt)
+        waypoint.alt_type = point.alt_type
+        # Other actions exist... but none of them *should* be the first
+        # waypoint for a flight.
+        waypoint.waypoint_type = {
+            PointAction.TurningPoint: FlightWaypointType.NAV,
+            PointAction.FlyOverPoint: FlightWaypointType.NAV,
+            PointAction.FromParkingArea: FlightWaypointType.TAKEOFF,
+            PointAction.FromParkingAreaHot: FlightWaypointType.TAKEOFF,
+            PointAction.FromRunway: FlightWaypointType.TAKEOFF,
+        }[point.action]
+        if waypoint.waypoint_type == FlightWaypointType.NAV:
+            waypoint.name = "NAV"
+            waypoint.pretty_name = "Nav"
+            waypoint.description = "Nav"
+        else:
+            waypoint.name = "TAKEOFF"
+            waypoint.pretty_name = "Takeoff"
+            waypoint.description = "Takeoff"
+            waypoint.description = f"Takeoff from {from_cp.name}"
+        return waypoint
+
+
 class Flight:
     unit_type: UnitType = None
     from_cp = None