add an " add item" button in the building interface

[Deantwo]

P.S : if a mean exists to do this, please tell me, i' m actually stranded on a lonely planet after the destruction of the main planet by the asteroid and without having the possibility to smelt ores , i just can't advance anyway.
This IS really a game blocker.

https://hazeron.com/mybb/showthread.php?...4#pid11994