Add doxygen documentation to connman_technology and connman_manager

Open-webOS-DCO-1.0-Signed-off-by: Sapna Todwal <sapna.todwal@palm.com>

Change-Id: Ica704db925bbbd1f69d9bbd8b844b8812d035cad
Reviewed-on: http://g2g.palm.com/1336
Reviewed-by: Build Verification
Tested-by: Sapna Todwal <sapna.todwal@palm.com>
Reviewed-by: Keith Derrick <keith.derrick@palm.com>