debian/libam7xxx0.1.install: install the AppStream metainfo file

debian/libam7xxx0.1.install: install the AppStream metainfo file

This fixes the following lintian warning:

W: libam7xxx0.1: appstream-metadata-missing-modalias-provide lib/udev/rules.d/60-libam7xxx0.1.rules
N:
N:    This package contain a udev rule for providing device access to the
N:    console user (using the uaccess udev TAG) or to members of the plugdev
N:    file group without announcing the hardware support using AppStream.
N:
N:    Refer to https://wiki.debian.org/AppStream/Guidelines for details.
N:
N:    Severity: normal, Certainty: certain
N:
N:    Check: appstream-metadata, Type: binary
N: