Refine return type of getActionInstruction function

- Updated the return type of getActionInstruction function from 'any' to a specific object structure.
- The new return type includes 'name', 'description', and 'parameters' fields.

src/action/customAction.ts

@@ -16,7 +16,7 @@ export interface Action {
 }
 
 // generate instruction for action
-export function getActionInstruction(action: Action): any {
+export function getActionInstruction(action: Action): { name: string, description: string, parameters: any } {
 	logger.channel()?.info(`Action Name: ${action.name}`);
 	const actionSchema = {
 		name: action.name,