Support usert-mention API and add narrowcast properties (#277)

* feat: make box's contents can empty and add animated property

* Modify to original

* feat: narrowcast properties and user mention

Co-authored-by: xingo xu <xingoxu@users.noreply.github.com>
Co-authored-by: xingoxu <xingoxu@gmail.com>

Author: louis70109

lib/types.ts

@@ -386,6 +386,28 @@ export type TextEventMessage = {
     productId: string;
     emojiId: string;
   }[];
+  /**
+   * Object containing the contents of the mentioned user.
+   */
+  mention?: {
+    /**
+     * Mentioned user information.
+     * Max: 20 mentions
+     */
+    mentionees: {
+      /**
+       * Index position of the user mention for a character in `text`,
+       * with the first character being at position 0.
+       */
+      index: number;
+      /**
+       * The length of the text of the mentioned user. For a mention `@example`,
+       * 8 is the length.
+       */
+      length: number;
+      userId: string;
+    }[];
+  };
 } & EventMessageBase;
 
 export type ContentProvider<WithPreview extends boolean = true> =
@@ -2499,6 +2521,8 @@ export type NarrowcastProgressResponse = (
       successCount: number;
       failureCount: number;
       targetCount: string;
+      acceptedTime: string;
+      completedTime: string;
     })
 ) & {
   errorCode?: 1 | 2;