Add Generator for NeNe based on EPOS4

[alcaliva]

Dear @AliceO2Group/reviewers-pwg-lf Could you please confirm that the options file is configured correctly?

https://github.com/AliceO2Group/O2DPG/blob/master/MC/config/examples/epos4/generator/NeNe_536TeV_EPOS4.optns

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[jackal1-66]

Can you create the test macro as well? You can use the OO one as an example.

[alcaliva]

Hi @jackal1-66, fixed. However, I get errors "Please resolve merge conflicts" but I do not understand it. Is it on my side?

[jackal1-66]

I can't see anything critical honestly, everything seems good. Could you maybe try to create a new branch updated to the latest O2DPG master and open a new PR?