Add custom name for packages in ATO overview

Resolves #55

game/ato/package.py

@@ -22,10 +22,15 @@ class Package:
     """A mission package."""
 
     def __init__(
-        self, target: MissionTarget, db: Database[Flight], auto_asap: bool = False
+        self,
+        target: MissionTarget,
+        db: Database[Flight],
+        auto_asap: bool = False,
+        custom_name: str | None = None,
     ) -> None:
         self.target = target
         self._db = db
+        self.custom_name = custom_name
 
         # True if the package ToT should be reset to ASAP whenever the player makes a
         # change. This is really a UI property rather than a game property, but we want

game/migrator.py

@@ -17,6 +17,7 @@ class Migrator:
     def _migrate_game(self) -> None:
         self._update_doctrine()
         self._update_packagewaypoints()
+        self._update_package_attributes()
 
     def _update_doctrine(self) -> None:
         doctrines = [
@@ -41,3 +42,9 @@ class Migrator:
             for p in c.ato.packages:
                 if not hasattr(p.waypoints, "initial"):
                     p.waypoints = PackageWaypoints.create(p, c)
+
+    def _update_package_attributes(self) -> None:
+        for c in self.game.coalitions:
+            for p in c.ato.packages:
+                if not hasattr(p, "custom_name"):
+                    p.custom_name = None