[[MPMediaItemArtwork alloc] initWithImage:] Adapt to iOS10.0

[liufannnn]

        if (@available(iOS 10.0, *)) {
            DFPlayerWeakSelf
            MPMediaItemArtwork *artwork = [[MPMediaItemArtwork alloc] initWithBoundsSize:[self.currentAudioInfoModel.audioImage size]
                                                                          requestHandler:^UIImage * _Nonnull(CGSize size) {
                return wSelf.currentAudioInfoModel.audioImage;
            }];
            _remoteInfoDictionary[MPMediaItemPropertyArtwork] = artwork;
        } else {
            MPMediaItemArtwork *artwork = [[MPMediaItemArtwork alloc] initWithImage:self.currentAudioInfoModel.audioImage];
            _remoteInfoDictionary[MPMediaItemPropertyArtwork] = artwork;
        }