优化playing

packages/artplayer/src/player/playingMix.js

@@ -0,0 +1,6 @@
+export default function playingMix(art, player) {
+    const { $video } = art.template;
+    Object.defineProperty(player, 'playing', {
+        get: () => !!($video.currentTime > 0 && !$video.paused && !$video.ended && $video.readyState > 2),
+    });
+}