Add artplayer-plugin-ambilight package and demo

docs/assets/example/ambilight.js

@@ -0,0 +1,16 @@
+// npm i artplayer-plugin-ambilight
+// import artplayerPluginAmbilight from 'artplayer-plugin-ambilight';
+
+var art = new Artplayer({
+    container: '.artplayer-app',
+    url: '/assets/sample/video.mp4',
+    autoSize: true,
+    plugins: [
+        artplayerPluginAmbilight({
+            blur: '50px', 
+            opacity: 1, 
+            frequency: 10, 
+            duration: 0.3,
+        }),
+    ],
+});