chore: Update mount parameter type in Danmuku and Setting classes

packages/artplayer-plugin-danmuku/src/danmuku.js

@@ -80,7 +80,7 @@ export default class Danmuku {
             fontSize: 'number|string',
             antiOverlap: 'boolean',
             synchronousPlayback: 'boolean',
-            mount: '?htmldivelement',
+            mount: '?htmldivelement|string',
             heatmap: 'object|boolean',
             points: 'array',
             filter: 'function',

packages/artplayer-plugin-danmuku/src/setting.js

@@ -608,8 +608,10 @@ export default class Setting {
     }
 
     mount(target = this.template.$controlsCenter) {
-        target.appendChild(this.template.$danmuku);
-        this.template.$mount = target;
+        console.log(target);
+        const $el = typeof target === 'string' ? document.querySelector(target) : target;
+        $el.appendChild(this.template.$danmuku);
+        this.template.$mount = $el;
         this.reset();
     }
 }

packages/artplayer-plugin-danmuku/types/artplayer-plugin-danmuku.d.ts

@@ -96,7 +96,7 @@ type Option = {
     /**
      * 弹幕发射器挂载点, 默认为播放器控制栏中部
      */
-    mount?: Element;
+    mount?: HTMLDivElement | string;
 
     /**
      * 是否开启弹幕热度图
@@ -188,7 +188,7 @@ type Danmuku = {
     /**
      * 挂载弹幕输入框
      */
-    mount: (el?: Element) => void;
+    mount: (el?: HTMLDivElement | string) => void;
 
     /**
      * 重置弹幕