Display Memory Usage on DataLayer Outliner

Hey Epic,

As per the title, it would be very convenient if the memory usage for each DataLayer were displayed on the DataLayer Outliner. Ideally, this memory usage would reflect the data amount measured during the most recent session start.

One use case for DataLayer currently is for memory management, such as with background data. A consideration with this approach is that the memory that can be loaded at once without causing hitches may vary between consoles. To manage this effectively, it would be ideal to check the memory usage of each DataLayer directly on the DataLayer Outliner.

Thank you