Create 4a-hal-generic repo

Owner name(s), gerrit user ID or email address

• Thierry Bultel    thierry.bultel@iot.bzh

• Loïc Collignon loic.collignon@iot.bzh

• Jonathan Aillet jonathan.aillet@iot.bzh

Project maintainers if different from the Owner: N/A

Project name:  4a-hal-generic

Short project description (1 line):   New 4A HAL AGL binding which makes use of the controller submodule

Repo name (if different from the project name)  N/A