rename debian package to rtslib-fb

Signed-off-by: Johannes Dewender <github@JonnyJD.net>
debian: fix setuptools usage, fix #34

Signed-off-by: Johannes Dewender <github@JonnyJD.net>
debian: update dependencies

We don't have any dependencies anymore.
Additionally, this conflicts with the original rtslib package.

Signed-off-by: Johannes Dewender <github@JonnyJD.net>
debian: use dh_python

Signed-off-by: Johannes Dewender <github@JonnyJD.net>
debian: build python 3 package

This also splits a -docs package for both.

Signed-off-by: Johannes Dewender <github@JonnyJD.net>