Does this mod exist? (ISRU with ore capacity)

[JohnnyPanzer]

After answering a question in the help forum I stumbled across a (simple) way to let converters produce fuel without external fuel tanks. I simply patched in the ability to store one unit of ore. Now I'm thinking this might be helpful for other players as well, some of which have absolutely no idea where to start, so I'm thinking I'll release this as a tiny mod to save them the trouble. This leads me to the question:

Is this allready a thing that exists? And if yes, is it a stand-alone feature or simply part of a larger plugin?

Unless it allready exists as a stand-alone mod, I'll go ahead and upload it to SpaceDock.