东哥，添加头部，通过setDifferModels来增加数据，最后一个元素有bug。  #463

addType<PcStreamDevInfoEntityHead>(R.layout.pc_stream_dev_info_adapter_head_item)
  addType<PcStreamDevInfoEntityFoot>(R.layout.pc_stream_dev_info_adapter_foot_item)
  addType<PcStreamDevInfoEntity>(R.layout.pc_stream_dev_info_adapter_item)
  onBind {
  when (itemViewType) {
  xxxxxxxxxxxxxx
  }
.models = source
mDataBind.recyclerView.bindingAdapter.run {
  addHeader(PcStreamDevInfoEntityHead())
  addFooter(PcStreamDevInfoEntityFoot())
}

//刷新
val newList: MutableList<PcStreamDevInfoEntity> = mutableListOf()
newList.addAll(source)
newList.add(
    PcStreamDevInfoEntity(
        id, "$id",
        coverUrl = "https://img2.huashi6.com/images/resource/2020/07/12/h82924904p0.jpg"
    )
)
mDataBind.recyclerView.setDifferModels(newModels = newList)
source.clear()
source.addAll(newList)