canvas with panning

lib/infinite_lazy_2d_grid.dart

@@ -1,15 +1,2 @@
-import 'package:flutter/widgets.dart';
-
-class InfiniteLazy2dGrid extends StatefulWidget {
-  const InfiniteLazy2dGrid({super.key});
-
-  @override
-  State<InfiniteLazy2dGrid> createState() => _InfiniteLazy2dGridState();
-}
-
-class _InfiniteLazy2dGridState extends State<InfiniteLazy2dGrid> {
-  @override
-  Widget build(BuildContext context) {
-    return const Placeholder();
-  }
-}
+export "./core/background.dart";
+export "./core/render.dart";