Minecraft Version: 1.12
Inventory Tweaks Version: InventoryTweaks-1.64+dev.146

This what the interface looks like:
https://i.imgur.com/MEcamXb.png

It has a sort button and don't care much about it but I can't space / shift click bunch items in at once sadly. It's used as the main chest in many packs like FTB Interactions so having basic manipulation would be quite amazing.

Thanks.

Supporting mod containers is entirely on that mod providing the correct info.

and on you at least making your mod run in dev environment and providing adequate API behavior.