Code refactoring in order to use a single BluetoothContext class

- add logging macros functions
- add CAPI macros functions

Signed-off-by: Corentin Lecouvey <corentin.lecouvey@open.eurogiciel.org>
remove useless source files

Signed-off-by: Corentin Lecouvey <corentin.lecouvey@open.eurogiciel.org>