Ability to plan tanker recovery for strike like flights (#1729)

* Initial refueling definitions.

* Adding refuel definitions.

* Initial functionality changes

* Regenerate package when adding refueling flight.

* Recursively change package waypoint.

* Fix mypy errors.

* Regenerate flight plans when tanker is added to package.

* Give tanker better starting position on package recovery.

* Add TOT calculation for refueling waypoint.

* Timing changes to Strike split point and Refueling start time.

* Add correct waypoint builder for refuel in tarcap and sweep.  Remove restrict afterburner on refuel point.

* Always generate a refuel point for a package.

* Less arbitrary altitude in Refuel track start time calculation.

* Refueling waypoint no longer optional.

* Fix mypy gen error.

* Better discrimination of which tanker flight plan to make.

* Remove refuel tot calculations.

* Remove package regeneration on tanker flight addition.

game/ato/packagewaypoints.py

@@ -1,4 +1,5 @@
 from dataclasses import dataclass
+from typing import Optional
 
 from dcs import Point
 
@@ -8,3 +9,4 @@ class PackageWaypoints:
     join: Point
     ingress: Point
     split: Point
+    refuel: Point