feat : api call and get captcha

packages/auth/lib/data/models/response/captcha/captcha_response_model.g.dart

@@ -9,17 +9,17 @@ part of 'captcha_response_model.dart';
 _CaptchaResponseModel _$CaptchaResponseModelFromJson(
   Map<String, dynamic> json,
 ) => _CaptchaResponseModel(
-  captchaKey: json['captchaKey'] as String?,
-  captchaImage: json['captchaImage'] as String?,
-  imageType: json['imageType'] as String?,
-  imageDecode: json['imageDecode'] as String?,
+  captchaKey: json['captcha_key'] as String?,
+  captchaImage: json['captcha_image'] as String?,
+  imageType: json['image_type'] as String?,
+  imageDecode: json['image_decode'] as String?,
 );
 
 Map<String, dynamic> _$CaptchaResponseModelToJson(
   _CaptchaResponseModel instance,
 ) => <String, dynamic>{
-  'captchaKey': instance.captchaKey,
-  'captchaImage': instance.captchaImage,
-  'imageType': instance.imageType,
-  'imageDecode': instance.imageDecode,
+  'captcha_key': instance.captchaKey,
+  'captcha_image': instance.captchaImage,
+  'image_type': instance.imageType,
+  'image_decode': instance.imageDecode,
 };