[new feature] ImagePreview: add swipe-duration prop (#3963)

src/image-preview/ImagePreview.js

@@ -38,6 +38,10 @@ export default createComponent({
       type: Boolean,
       default: true
     },
+    swipeDuration: {
+      type: Number,
+      default: 500
+    },
     overlay: {
       type: Boolean,
       default: true
@@ -267,6 +271,7 @@ export default createComponent({
       <Swipe
         ref="swipe"
         loop={this.loop}
+        duration={this.swipeDuration}
         indicatorColor="white"
         initialSwipe={this.startPosition}
         showIndicators={this.showIndicators}