[multiprocessing] Add paddle.incubate.multiprocessing for sharing tensors  between python processes. (#37302)

* Add support for paddle.multiprocessing
* move multiprocessing to incubate.

* Move Pool OPs to phi

* Fix CI error

* Fix conflicts

* move the common function to kernel/funcs/sparse/

* add namespace

* rm unused file

* move func

* reuse code

* refine partial_program

* fix code for test_mnist.py train

* support quantify UT

* make __fake_vars and _double_grads to lazy

* fix comments

* refactor infermeta files

* update

* rename softmax kernel name

* move softmax infershape

* fix failed test

* move allclose kernel

* remove allclose op kernel

* fix coverage failed

* move roi_align kernel to phi

* fix bug of roi_align xpu

* [custom kernel] fix static object de-initialize bug

* fix text

* fix text

* refine log info

* fix NetBuilder API Name bug in cinn_lib_test

* update cinn version to newest

* fix eager benchmark test failed

* fix test_tracer failed

submanifold convolution

* format softmax forward

* seperate include and macro to two if-else

* Move psroi_pool OP to phi

* Replace platform::TensorCopy with phi::Copy

* remove needless deps in unittests

* add gpu marco

* fix other unittests

* fix kernel name error

* fix test_prepare_op

* fix failed dygraph unittests

* fix gpu failed tests

* fix cinn test failed

* fix cinn test failed

* fix dropout tests

* [Phi] Migrate tile_op into Phi

* fix tile_sig

* fix include headers

* fix using

* add reduce_sum grad kernel

* add reduce_grad

* modify reduce grad

* update reduce grad functions

* fix build error

* add argument mapping

* move cast input after grad

* add dims.size=1 cpu reduce_sum grad compute method

* update reduce grad GPU

* remove raw reduce_sum_grad kernel

* modify header files

* add namespace funcs for reduce_grad_funcstions

* first commit

* fix

* fix

* fix

* fix

* fix

* fix xpu and npu

* fix

* mv erf op to phi

* fix as review

* fix as review

* fix format

* [Phi] Fix infershape if encounter TensorList and Attr("XXX")

* add InferShapeArgumentMappingContext

* pad infershape

* fix code

* fix

* add set dtype

* transfer nll_loss infershape into phi

* Fix issues with intermediate kernels

* Fixed CI issues