GitLab

* change parse operator function signature

* clang format

* add parsing the split operator

* clang format

* add parsing split operator

* make squeeze/unsqueeze inputs to standard shape

* change parsing pad to support opset 11 definition

* clang format

* add unit tests for the split operator

* clang format

* fix cppcheck error

* clang format

* update tests for multiple program outputs

* clang format

* fix cppcheck error

* clang format

* refine an error message

* add unit tests for the pad operator

* clang format

* fix review comments

* fix unit test error
Co-authored-by: mvermeulen <5479696+mvermeulen@users.noreply.github.com>