feat:add loadCallback for image network loading callback

iOS/Pod/Classes/Shader/DoricImageNode.m

@@ -24,6 +24,10 @@
 #import "Doric.h"
 #import <SDWebImage/SDWebImage.h>
 
+@interface DoricImageNode ()
+@property(nonatomic, copy) NSString *loadCallbackId;
+@end
+
 @implementation DoricImageNode
 
 - (UIImageView *)build {
@@ -37,7 +41,19 @@ - (void)blendView:(UIImageView *)view forPropName:(NSString *)name propValue:(id
         __weak typeof(self) _self = self;
         [view sd_setImageWithURL:[NSURL URLWithString:prop] completed:^(UIImage *_Nullable image, NSError *_Nullable error, SDImageCacheType cacheType, NSURL *_Nullable imageURL) {
             __strong typeof(_self) self = _self;
-            [self requestLayout];
+            if (error) {
+                if (self.loadCallbackId.length > 0) {
+                    [self callJSResponse:self.loadCallbackId, nil];
+                }
+            } else {
+                if (self.loadCallbackId.length > 0) {
+                    [self callJSResponse:self.loadCallbackId,
+                                         @{@"width": @(image.size.width), @"height": @(image.size.height)},
+                                    nil];
+                }
+                [self requestLayout];
+            }
+
         }];
     } else if ([@"scaleType" isEqualToString:name]) {
         switch ([prop integerValue]) {
@@ -54,6 +70,8 @@ - (void)blendView:(UIImageView *)view forPropName:(NSString *)name propValue:(id
                 break;
             }
         }
+    } else if ([@"loadCallback" isEqualToString:name]) {
+        self.loadCallbackId = prop;
     } else {
         [super blendView:view forPropName:name propValue:prop];
     }