Use a DeviceData object

* This synchronize the Libera Electron and Libera Brillance Plus

* Do not separate those cases

* Also specify in doctring of load config that configuration are superseded

* Source code is the master of version numbering, it then should be copied in git
* Single source of version is __init__.py

* Also rename artifacts

* Use a _version.py file to hold the version. Created by Makefile.

* rename directory bin to script
* remove older deploy script
* Configuration are installed as package files

* This allow the quick stopping of all frames to steerers

* Only picked value allowed (nargs = ?)
* Default is 'all', not handled by argparse

* Change name, so to not collide with --conf
* Fix test for values

* There is a '--force' flag to force it

* It did not work last time, try to see why

* Is now a python module, with a CLI offered. Ready to ship on RCM
* Use configparser for configuration

* Add a default config file
* It is possible to point to a new config in the CLI