media property
Set media, can be url, file path, assets://path etc.
Implementation
set media(String value) {
_media = value;
final cs = value.toNativeUtf8();
_player.ref.setMedia
.asFunction<void Function(Pointer<mdkPlayer>, Pointer<Char>)>()(
_player.ref.object, cs.cast());
malloc.free(cs);
}