feat: background playback (wip)

https://github.com/ryanheise/audio_service/issues/1124

lib/widgets/video_player_main.dart

@@ -0,0 +1,53 @@
+import 'package:chewie/chewie.dart';
+import 'package:flutter/widgets.dart';
+import 'package:zap_stream_flutter/main.dart';
+
+class MainVideoPlayerWidget extends StatefulWidget {
+  final String url;
+  final String? title;
+  final String? placeholder;
+  final double? aspectRatio;
+  final bool? autoPlay;
+  final bool? isLive;
+
+  const MainVideoPlayerWidget({
+    super.key,
+    required this.url,
+    this.title,
+    this.placeholder,
+    this.aspectRatio,
+    this.autoPlay,
+    this.isLive,
+  });
+
+  @override
+  State<StatefulWidget> createState() => _MainVideoPlayerWidget();
+}
+
+class _MainVideoPlayerWidget extends State<MainVideoPlayerWidget> {
+  @override
+  void initState() {
+    mainPlayer.loadUrl(
+      widget.url,
+      title: widget.title,
+      placeholder: widget.placeholder,
+      aspectRatio: widget.aspectRatio,
+      autoPlay: widget.autoPlay,
+      isLive: widget.isLive,
+      artist: "zap.stream"
+    );
+
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    mainPlayer.stop();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Chewie(controller: mainPlayer.chewie!);
+  }
+}