AppImage include with wildcard only take first file of results

[h3x4d3c1m4l]

Hi all! Consider the following includes in make_config.yaml:

include:
  - /usr/lib/x86_64-linux-gnu/libgphoto2/*/*.so
  - /usr/lib/x86_64-linux-gnu/libgphoto2_port/*/*.so

I would expect this to include every found file. Currently only the first result of each result is actually included.

I might be able to fix this. Would you accept a PR?

[h3x4d3c1m4l]

Also, it does not put the library in the same path, while libgphoto2 probably needs it to be...