gwenhywfar, libchipcard: Move into aqbanking dir

This should make it easier to deduplicate things, such as fetching
upstream sources and the plugin paths, because after all these libraries
are aqbanking-related and maintained by the same author on the same
site.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @cillianderoiste, @urkud