Sidelink configuration passed from RRC->MAC, defined interface functions

- Phy configuration will be prepared by MAC
	- Sidelink preconfiguration parameters passed from RRC->MAC
	- Only 1 SSB TA allocation used
	- psbch payload prepared by MAC after receiving the tx slss req

executables/nr-ue.c

@@ -1013,6 +1013,8 @@ void init_NR_UE(int nb_inst, char *uecap_file, char *reconfig_file, char *rbconf
         free_nr_noS1_bearer_config(&rbconfig, NULL);
       }
     }
+    //TODO: Move this call to RRC
+    start_sidelink((&rrc_inst[i])->ue_id);
   }
 }