testlibrary cannot be in resources folder

[dpulitano]

Undetermined behavior might happen when the testlibrary folder is in src/main/resources.

I think I can modify CommandLibraryParser:handleLibrarySource()to look at the directory as a project resource.

Currently, the solution/workaround is to always place the testlibrary in the root of the folder, but I would think allowing it in resources folders would be better for when projects are using other XCore projects as dependencies for commands