feat: Add help flag support to enhanced crontab management script installation

manage-enhanced-crontab.sh

@@ -204,6 +204,11 @@ show_usage() {
 
 case "${1:-help}" in
     install)
+        # Check if --help flag is present
+        if [[ "$*" == *"--help"* ]]; then
+            show_usage
+            exit 0
+        fi
         verify_scripts_exist
         backup_current_crontab
         install_enhanced_crontab