To adress the OP and various commentors, while I agree that something you can manually fill attached to the HUB workbench (or even the storage that's right behind you when you're on it) that directly link to the bench as accessible materials would be great, I don't think that filling it automatically with conveyors would be a good idea. - That's literally what the assemblers and crafters are for to then connect them to a large storage tank. and let's be honest, once you're building big enough you won't be using the work bench anyway, everything wll be automated. But at least for in the beginning having access to the raw materials in the HUB storage when using the HUB bench would be ideal.
As for people keep referencing subnautica's auto craft - again, that's what the crafters are for, and also, if you want the game to play itself for you at early stages, just go watch someone else play or, you know, put in the effort to set up your factory to auto craft things since that's *literally* the entire point of the game?