feat : api call and get captcha

packages/auth/lib/presentation/widget/captcha/view.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:rasadyar_auth/presentation/widget/clear_button.dart';
@@ -24,16 +26,20 @@ class CaptchaWidget extends GetView<CaptchaWidgetLogic> {
             border: Border.all(color: Colors.grey.shade300),
             borderRadius: BorderRadius.circular(8),
           ),
-          child: Expanded(child:controller.obx((state) {
-              return Container(color: Colors.blue,);
-          },
+          child: controller.obx(
+                (state) => Image.memory(base64Decode(state?.captchaImage??''),fit: BoxFit.cover,),
             onLoading: const Center(
-              child: CircularProgressIndicator(
+              child: CupertinoActivityIndicator(
                 color: AppColor.blueNormal,
-                strokeWidth: 2,
               ),
             ),
-          )),
+            onError: (error) {
+              return const Center(
+                  child: Text(
+                      'خطا در بارگذاری کد امنیتی',
+                      style: AppFonts.yekan13,));
+            },
+          ),
         ),
         const SizedBox(height: 20),
         IconButton(