SENSOR component inital commit


git-svn-id: https://gnunet.org/svn/gnunet@33061 140774ce-b5e7-0310-ab8b-a85725594a96
SENSOR service integration


git-svn-id: https://gnunet.org/svn/gnunet@33062 140774ce-b5e7-0310-ab8b-a85725594a96