* replace ForeignJobInstance using JobInstance

* LazyJobStreamType

* NNGraphIf

* NNGraph -> NNGraphIf

* fix compile bugs

* add unit tests for instruction RunLazyJob

* GetInputBufferName/GetOutputBufferName

* multi-client push pull

* refactor wait_and_send_ids_kernel to support multi-client mode

* support multi-client mode return_op

Co-authored-by: liufengwei <2472937968@qq.com>
Co-authored-by: oneflow-ci-bot <69100618+oneflow-ci-bot@users.noreply.github.com>