🎨 #1659 Json解析统一优化

* 解决动态添加第一个公众号时由于configStorageMap为null报空指针异常

* Json解析统一优化

Co-authored-by: niefy <niefy@qq.com>

weixin-java-open/src/main/java/me/chanjar/weixin/open/bean/WxOpenCreateResult.java

@@ -1,6 +1,5 @@
 package me.chanjar.weixin.open.bean;
 
-import cn.binarywang.wx.miniapp.util.json.WxMaGsonBuilder;
 import com.google.gson.annotations.SerializedName;
 import lombok.Data;
 import lombok.EqualsAndHashCode;

weixin-java-open/src/main/java/me/chanjar/weixin/open/bean/ma/WxOpenMaPreviewInfo.java

@@ -3,8 +3,6 @@ package me.chanjar.weixin.open.bean.ma;
 import com.google.gson.annotations.SerializedName;
 import lombok.Data;
 
-import java.util.List;
-
 /**
  * @author zxfreedom
  * @description