In DWDS, we currently support two load strategies, one for each of the supported module formats: AMD ([dwds/lib/src/loaders/frontend_server_require.dart](https://github.com/dart-lang/webdev/blob/main/dwds/lib/src/loaders/frontend_server_require.dart)) and DDC ([dwds/lib/src/loaders/frontend_server_ddc.dart](https://github.com/dart-lang/webdev/blob/main/dwds/lib/src/loaders/frontend_server_ddc.dart)). We now have a new module format (tentatively called `DDC Library Bundle`), hence we want a new load strategy to support working with this new format.