remove use of s6-rc. Split sanitize_system to new function. Revamp clone feature. Do not handle anymore backup directory at clone time. Pass to new graph_matrix_get_edge_g_sorted_sa() and graph_matrix_get_edge_g_sa() functions interface

create fdholderd and oneshotd service directory at scandir creation. Remove creation of livetree directory

change graph_build_g interface, add graph_build_g, graph_build_service, graph_build_service_bytree_from_src function

service Master resolve file is no longer a service incorporate to the DB. It was reorganize to provide mandatory field to be a real Master. This file will now be used to known the global state of the services.