[ELPA] New package: bluetooth

[Raffael Stocker]

I would like to contribute a package for managing Bluetooth devices to
Elpa.

The bluetooth mode implemented in this package is derived from
tabulated-list-mode and offers basic device-management functions, such
as pairing/connecting, setting some properties, scanning for devices,
getting device info (like services offered by a device) and controlling
the host computer's Bluetooth adapter (power, pairable/discoverable
properties).

This mode uses D-Bus and depends on the bluez daemon.  Its use is
therefore limited to GNU/Linux.  It will be most useful on setups using
Emacs as the desktop environment.

The copyright has not (yet) been transferred to the FSF and I have not
signed any papers to that effect.  What exactly do I have to do here?

Also note that this is my first ever Emacs package, so someone should
maybe check it carefully.

The source is currently hosted on Gitlab:
https://gitlab.com/rstocker/emacs-bluetooth