* add fp16 data type for set_value

* cancel flip modification

* add fp16 dtype support for set_value

* split phi and fluid infermeta context

* resolve conflict

* fix type error

* optimize scheduling perf

* spec small vector size

* replace all grad var name

* fix test failed

* move init defalut signature

* polish details

* polish details

* fix no init bug

* init sig for tests

* add init sig for infer

* fix infrt error

* fix infrt failed

* fix kunlun error

* fix infrt failed

* move set_value_grad kernel form fluid to phi

* add unittest for passing coverage ci

* save code

* fix bug of set_value

* add coverage test