improve readme.md and configs util functions

src/orisys/configs/__init__.py

@@ -56,7 +56,7 @@ def load_config(config_name_or_path):
     with open(package_config_path, 'r', encoding='utf-8') as f:
         return json.load(f)
 
-def list_configs():
+def list_config():
     """
     List all available JSON configuration files in the configs directory.
     
@@ -98,7 +98,7 @@ def _format_json_value(value, indent_level=0, indent_str="    "):
         # Primitive types (string, number, bool, None)
         return json.dumps(value, ensure_ascii=False)
 
-def export_config(config, path="./config/exported_config.json"):
+def export_config(config_name = None, path="./config/exported_config.json"):
     """
     Export configuration to JSON file with readable formatting.
     Arrays/lists are kept on a single line, while nested objects are indented.
@@ -110,6 +110,7 @@ def export_config(config, path="./config/exported_config.json"):
     Returns:
         The exported config dictionary
     """
+    config = load_config(config_name)
     Path(path).parent.mkdir(parents=True, exist_ok=True)
     
     with open(path, 'w', encoding='utf-8') as f:
@@ -117,5 +118,6 @@ def export_config(config, path="./config/exported_config.json"):
         f.write(formatted)
         f.write('\n')  # Add trailing newline
     
+    print(f"Config name: {config_name} exported to {path}")
     return config