Enhance entrypoint script with backup service functions and debug logging

scripts/scheduler/entrypoint.sh

@@ -102,10 +102,14 @@ fi
 
 backup_query_state() {
     
+    echo "backup_query_state"
+
 }
 
 backup_set_service() {
 
+    echo "backup_set_service"
+
 }
 
 backup_set_client() {
@@ -204,10 +208,15 @@ backup_set_client() {
 }
 
 backup_challenge_clients() {
+
+    echo "backup_challenge_clients"
+
 }
 
 restore_from_backup() {
 
+    echo "restore_from_backup"
+
 }
 
 create_htpasswd_file() {