chore: Update danmuku plugin configuration handling and improve performance

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

@@ -146,6 +146,11 @@ type Option = {
      */
     visible?: boolean;
 
+    /**
+     * 是否开启弹幕发射器
+     */
+    emitter?: boolean;
+
     /**
      * 弹幕输入框最大长度, 范围在[1 ~ 1000]
      */