Reorganize directory structure: move utility files to misc/ directory

- Move all non-wrapper files (testing scripts, documentation, utilities) to misc/ directory
- Keep SF CLI wrapper scripts and README.md in root directory for better organization
- Maintain clean root directory with only the actual wrapper scripts and main documentation
- All wrapper scripts remain easily accessible and discoverable
- Supporting files are organized in misc/ subdirectory

sf-data-import

@@ -168,6 +168,12 @@ BATCH_SIZE="10000"
 IGNORE_ERRORS=false
 VERBOSE=false
 
+# Show help if no arguments provided
+if [[ $# -eq 0 ]]; then
+    show_usage
+    exit 0
+fi
+
 # Parse command line arguments
 while [[ $# -gt 0 ]]; do
     case $1 in