Hi mdbs99,
Unfortunately you cannot publish code without a package file(lpk). The whole concept of OPM is based on packages, a large part of the information you see in the package tree is extracted from the lpk files. More over OPM compiles, builds the packages using the lpk files.
Looking back, I think it was a mistake from my part, source code without lpk files should also be allowed, but I cannot change that now.
regards