Add a warning that don't name files same

There was a topic recently about animation problem:

Here I found out that GDevelop doesn’t respect file systems, so I would like you to add a warning here telling that “Don’t name assets same because it can cause sprite changing problem” or something like that.

Can you make a small example project demonstrating the bug? I’ll forward it to the devs.
Better fix this bug rather than add a warning :slight_smile: