Fix CPP export for Add Sub and add export for Mul

Context

Add, Mul and Sub did not export correctly through aidge_export_cpp.

Fixed and add export for Mul

Modified files

Added in aidge_expot_cpp/operators.py;

• fixes in AddCPP and SubCPP class
• implementation of MulCPP class + registration of operator Mul

Detailed major modifications

No major modification, except the addition of the support for Mul export.

TODO

No todo forecasted.

Note though that the code for the element wise operators could be factorized out in the future.

Note also, that there is for now unit tests missing for operator exports, could contribute to this in the future.

Note to reviewers, I'm an external contributor from a fork, hence do not expect the pipelines to pass. I do not have access to the pipeline and thus they fail on timeout.

changed the description

@cmoineau perhaps you could look and optionally merge this one?

I will try to look at this MR this afternoon ! I keep you updated.

requested review from @cmoineau

Note: this MR will fix #11 (closed)

Everything looks good to me I will merge this MR to dev !

Thanks for your contribution @cguillon

mentioned in commit 17efa8fb

merged

mentioned in issue #11 (closed)

@cmoineau For the question "why do you add the activation kernel", I did not change the current templates for Add/Mul/etc... and actually they are using the activation (even if always set to No activation). The include was missing and thus the export failed.

I realized it and removed my comment but thanks for the clarification :)