feat: Move to Flutter 3.0.0 and Dart 2.17.0 (#1713)

This upgrades all packages to Flutter 3.0.0 and fixes all analyze issues that came from that.

examples/lib/stories/input/gesture_hitboxes_example.dart

@@ -66,13 +66,10 @@ class MyShapeComponent extends PositionComponent
 
   MyShapeComponent({
     required this.hitbox,
-    Vector2? position,
-    Vector2? size,
-    double? angle,
+    super.position,
+    super.size,
+    super.angle,
   }) : super(
-          position: position,
-          size: size,
-          angle: angle,
           anchor: Anchor.center,
         );