* move selected_rows kernel head to selected_rows dir

* update license

* add sr namespace

* refacter selected_rows kernel funciton name

* fix bug

* move uniform_random to phi

* fit selected_rows

* replace mutable_data

* unify register macro

* rename declare macro

* fix infrt error

* rename pten dir to phi

* rename namespace to phi

* rename infrt pten dir to phi

* resolve conflict

* rename pten to phi in cmake

* revert all infrt change

* change needed files

* fix infrt failed

* fix inference failed