python

* support_tensor_to/to_local

* export consistent_tensor.to_local()

* refine code

* export tensor.to()...

* refine code

* refine code

* optimize code

* refine code

* refine

* back up

* add tensor.to func

* make of_format

* remove to in pyTensor

* sync gpu data

* refine

* refine

* refine

* refine

* refine

* refine

* refine

* refine

* refine

* backup

* refine

* rebase

* check in gen py

* merge master and fix bugs

* address pr comments

* address pr comments

* auto format by CI

* remove boxing

* refine

* Fix optional

* remove to in tensor.cpp

* update

* Support symbol placement type in functional.

* add sbp and sbp list arg

* refine

* use functional

* refactor CastConsistentOpExpr

* to_consistent(flow.B) backward

* Cache op expr

* add EagerNcclOpKernelState

* refine

* refine

* refine

* refine

* refine

* refine

* minor fix

* capture OpInterpContext

* unimplemented apply

* add GetNdSbp

* add mutex

* refine

* merge EagerConsistentTensorImpl::NewWithPhyTensor and EagerConsistentTensorImpl::NewWithoutPhyTensor into EagerConsistentTensorImpl::New

* rename functiona SyncData to SyncMetaAndData

* of_format

* add to_local to pybind

* add placement_sbp_util

* minor fix

* sync shape and data when tensor_to_local

* fix rpc_token bugs

* refactor AsyncRpcCtx

* set logical_shape correctly

* simplify implementation of consistent_tensor.to_local

* initialize rpc_token with zero

* refactor grad functions of to_consistent/to_local

* reformat and address pr comment

* reformat

* refactor eager_nccl_reduce lernel

Co-authored-by: tsai <jackalcooper@gmail.com>
Co-authored-by: Xinqi Li <lixinqi0703106@163.com>
Co-authored-by: Li Xinqi <lixinqi2010@gmail.com>
Co-authored-by: oneflow-ci-bot <ci-bot@oneflow.org>
Co-authored-by: hjchen2 <chenhoujiangcug@gmail.com>
Co-authored-by: oneflow-ci-bot <69100618+oneflow-ci-bot@users.noreply.github.com>