feat(printer): 新增样品使用功能并优化打印流程

- 在AppPrinterController中新增/useSample接口用于使用样品- PrinterServiceImpl中实现生成微信小程序二维码逻辑
- 更新setUserIsBuyItem方法签名以支持异常抛出- 添加useSample方法占位实现
- 引入相关依赖类如MpConfigEntity、OrderRepository和WxMpUtil

src/main/java/com/ycwl/basic/controller/mobile/AppPrinterController.java

@@ -36,6 +36,12 @@ public class AppPrinterController {
         return ApiResponse.success(printerService.listByScenicId(scenicId));
     }
 
+    @PostMapping("/useSample/{sampleId}")
+    public ApiResponse<?> useSample(@PathVariable("sampleId") Long sampleId) throws IOException {
+        JwtInfo worker = JwtTokenUtil.getWorker();
+        return ApiResponse.success(printerService.useSample(worker.getUserId(), sampleId));
+    }
+
     @GetMapping("/getListFor/{scenicId}")
     public ApiResponse<List<MemberPrintResp>> getListFor(@PathVariable("scenicId") Long scenicId, @RequestParam(required = false) String faceId) {
         JwtInfo worker = JwtTokenUtil.getWorker();