mod_conference Add energy level to conference_add_event_member_data

This is useful when you want to find the energy a member joined with
without having to pull the XML list

src/mod/applications/mod_conference/mod_conference.c

@@ -477,6 +477,7 @@ static switch_status_t conference_add_event_member_data(conference_member_t *mem
 	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Mute-Detect", "%s", switch_test_flag(member, MFLAG_MUTE_DETECT) ? "true" : "false" );
 	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Member-ID", "%u", member->id);
 	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Member-Type", "%s", switch_test_flag(member, MFLAG_MOD) ? "moderator" : "member");
+	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Energy-Level", "%d", member->energy_level);
 
 	return status;
 }