project: add daemon src and target to xcode project

- Adds a group that points to the daemon src.

- Adds a dummy target that runs makes the daemon and copies the
  output libs for consumption by the client. The client target
  can be set to depend on the daemon build.

Change-Id: Iffdcfa4657fa244bb09c809f8bd0c8b08b0eed05
Reviewed-by: Kateryna Kostiuk <kateryna.kostiuk@savoirfairelinux.com>