* rename sendrecv.proto to namespace paddle.distributed

* split ps with distributed

* oneps (3/4)
Co-authored-by: NMrChengmo <cmchengmo@163.com>
Co-authored-by: Nmalin10 <malin10@baidu.com>
Co-authored-by: Nchengmo <chengmo@baidu.com>

* 　add heter box

* add trainer, worker, wrapper...

* format

* for ci

* format

* remove boost get

* boost & copyright

* rename

* 　rename

* format

* format

* format
Co-authored-by: Nyaoxuefeng6 <yaoxuefeng@baidu.com>

* add service, remove ut on mac

* fix heter_profiler & add heter stop method

* fix code style

* add ps table

Change-Id: I468a04bd071d21ff52654926fcf4d5f3da19e178