* add embedding backward rule

* update backward api

* revert api

* matmul inferbackward

* update unitest

* [clang-tidy] enable modernize-use-emplace

* Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into modernize_use_emplace

* add split spmd rule

* add pytest in cmake file

* small fix

* resolute input sharding conflict maybe

* fixed comment

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Co-authored-by: NYichen Zhang <zhangyichen03@baidu.com>
Co-authored-by: Nzhiqiu <chenqiuliang@baidu.com>

* add some basic functions

* add elementwise rule for auto parallel

* add unit test for elementwise rule

* fix the lib name in spmd rule test cmake file

* fix some bugs

* add unit tests for elementwise spmd rule in python

* bug fix

* delete cpp unit test for elementwise spmd rule (use python ut now)

* add cpp unit test for elementwise rule

* use concrete op name in unit test

* fix typo

* fix code style

* delete cpp unit test

* add more details in log

* base rule

* add sharidng merge

* add sharidng axis merge

* define unified data class for inferencing dist_attr

---------
Co-authored-by: NYichen Zhang <zhangyichen03@baidu.com>

* base rule

* add sharidng merge

* add sharidng axis merge

* define unified data class for inferencing dist_attr

* test wrap DistTensorSpec in dygraph mode

* matmul main logic done

* define unified data class for inferencing dist_attr

---------
Co-authored-by: NYichen Zhang <zhangyichen03@baidu.com>