GitLab

* if operator support with constant condition input

* clang format

* add a missing file

* clang format

* add an onnx verifcation unit test for the if operator

* clang format'

* fix review comments

* temp version to try jenkin build

* remove unnecessary changes

* unit tests refinement for more code coverage

* clang format

* try a mutex to fix possible race condition in onnxruntime tests

* tmp changes to try jenkins build

* remove unnecessary code

* fix review comments
Co-authored-by: mvermeulen <5479696+mvermeulen@users.noreply.github.com>