1、ImageWidget-增加最大缓存宽高

lib/widget/image_widget.dart

@@ -19,6 +19,8 @@ class ImageWidget {
     Widget? placeholder,
     Widget? errorWidget,
     bool signature = false,
+    int? maxHeight,
+    int? maxWidth,
   }) {
     var domainUrl = domain ?? ImageWidget.domain;
     if (url != null && !url.startsWith("http")) {
@@ -33,7 +35,7 @@ class ImageWidget {
     }
     return OctoImage(
       // 拼接Random，修复图片地址固定，无法展示最新图片问题
-      image: CachedNetworkImageProvider(url!),
+      image: CachedNetworkImageProvider(url!, maxWidth: maxWidth, maxHeight: maxHeight),
       imageBuilder: MyOctoImageTransformer.getOctoImageBuilder(type),
       placeholderBuilder: ImageWidget.placeholderBuilder(placeholder: placeholder),
       errorBuilder: ImageWidget.errorBuilder(errorWidget: placeholder),