revamp 66-init. Provide option to only init enabled service or disabled service or all service of a trees

remove function about backup handling: the backup directory is now handled completely differently without the use of s6-rc

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

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.

rename tree_resolve_read_master_cdb and tree_resolve_write_master_cdb function to tree_resolve_master_read_cdb and tree_resolve_master_write_cdb respectively