* [ONNX] Tool to serialize ONNX models

* Review fix.

* Add back dependencies to onnx_import_interface target.

* Review fix pt. 2

* Check also for errors when opening file stream.

* use line comments instead of multiline comments for license header

* update more

* update new files

* more header updates

* style

* Add cpio file read/write class and unit tests

add reserializer

Add unit test for serialize constants to cpio file. Fix bug in serializer if function has no parameters.