custom audio order

Closes #1636

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/grpc/audio.dart

@@ -44,6 +44,7 @@ class AudioGrpc {
     String? next,
     int qn = 80,
     int fnval = 4048,
+    ListOrder order = ListOrder.ORDER_NORMAL,
   }) {
     return GrpcReq.request(
       GrpcUrl.audioPlayList,
@@ -63,7 +64,7 @@ class AudioGrpc {
           voiceBalance: Int64(1),
         ),
         extraId: extraId,
-        sortOpt: SortOption(order: ListOrder.ORDER_NORMAL),
+        sortOpt: SortOption(order: order),
         pagination: Pagination(pageSize: 20, next: next),
       ),
       PlaylistResp.fromBuffer,