feat: Add procedure and function management in flow controller

- Introduced new endpoints in FlowController for listing procedures and retrieving procedure parameters, enhancing the flow management capabilities.
- Updated FlowDataMoveService to support procedure calls during data movement, ensuring seamless integration with external and internal databases.
- Enhanced NodeFlowExecutionService to execute procedure call actions, allowing for dynamic execution of stored procedures within flow nodes.
- Updated frontend components to support procedure selection and parameter management, improving user experience in configuring flow steps.
- Added necessary types and API functions for handling procedure-related data, ensuring type safety and clarity in implementation.

frontend/components/dataflow/node-editor/sidebar/nodePaletteConfig.ts

@@ -132,6 +132,14 @@ export const NODE_PALETTE: NodePaletteItem[] = [
     category: "external",
     color: "#06B6D4", // 시안
   },
+  {
+    type: "procedureCallAction",
+    label: "프로시저 호출",
+    icon: "",
+    description: "DB 프로시저/함수를 호출합니다",
+    category: "external",
+    color: "#8B5CF6", // 보라색
+  },
 
   // ========================================================================
   // 유틸리티