[pogues2lunatic] - Simplify transformation

[laurentC35]

For landing EnoV3, it's easier to simplify the pogues2lunatic transformation.
Instead of pogues2ddi (done by EnoV2) then ddi2lunatic (done by EnoV3).

The transformation becomes pogues2lunatic directly (transformation supported by EnoV3 without passing through the ddi).

[laurentC35]

I think we need a PoguesMapper to do this -> https://github.com/InseeFr/Eno/tree/v3-main/eno-core/src/main/java/fr/insee/eno/core/mappers

[nsenave]

@laurentC35 yes Pogues as input is the next planned in Eno java. Once done, we could do Pogues -> Lunatic directly.

For now this is paused, since we're thinking about doing a refresh of Pogues, which might change the model a lot.

[nsenave]

However, to prepare for this, I'd like to introduce a "Pogues to Lunatic" endpoint in Eno web-service, which could be useful here in Pogues backend.