* XPU support eager mode

* add unittest for XPU eager mode

* minor bugfix

* minor bugfix, test=kunlun

* correct copyright info

* 1. remove unsed vars/funcs
2. ProcessGroupBKCL inherit from ProcessGroupStream

* bugfix for fp16 in eager mode multi-card, test=kunlun

* rebase & fix a few issues

* use new processgroup interface, test=kunlun

* fix compile issue, test=kunlun

* [CustomDevice] GetCCLComm add custom device support

* update

* update

* update

* update brpc version;test=develop

* [CustomDevice] add custom ccl 2/2

* update

* update

* update launch

* init

* move CUDAStream to phi

* fix compilation

* merge develop

* add stream_owned_ member

* split cuda_stream.h

* fix cpu compile

* fix constructor

* fix bug

* fix windows compile

* fix inference test_levit

* fix windows tests

* merge all phi lib to several big static lib

* merge all phi lib to several big static lib

* fix bug

* fix bug

* refactor reducer

* modify cmakelists

* solve conflicts

* rename group and update process_group

* fix bugs of ProcessGroupNCCL

* modify for CIs

* refactoring reducer

* add pg_hccl

* add pg_gloo

* add reducer

* rename pten to phi

* fix infrt compile failed

* resolve conflict

* add processgroup_nccl