* first commit

* pass ctest of  elementwise_div_grad

* fix_bugs_for_elementwise_branch_selection

* fix merge_dims bugs

* fix all influenced file

* elementwise_add kernel refactor

* fix compile bugs in elementwise_add refactor

* fix compile bugs when run in npu/xpu

* fix bugs when run unit test

* fix bugs when run ci-windows

* modify code as recommended

* code format adjust

* fix bugs when run ci

* fix compile bug when run in ci-windwos