Ender Chest and Barrel UI Texture

A very simple and small change

I've been working on a resource pack for Minecraft for some time now. However, there is a problem. Enderchest and barrel use the same texture as the normal chests. I would like them to have their own UI texture, like the Shulker Chest. These currently all use the "generic_54" texture, which could then be renamed to "chest" as it is only used by chests, double chests, redstone chests, chests in boats and minecarts. This would allow Resourcepacks devs to create a custom UI texture for Ender Chest and Barrel without them always using the same texture as the normal chests.
I would be really happy if this would become a feature of Minecraft in the near future :)