[SofaCUDA] extern template instantiations

[alxbilger]

The extern template instantiations allows to include SofaCUDA/config.h before ObjectFactor.h. That is why the module name is defined properly in this PR. The extern template instantiations don't act directly on the module name, just the order of includes.

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[alxbilger]

[ci-build][with-all-tests]

[epernod]

Sorry I don't understand the link between your comment on the factory and the changes in the PR.

[alxbilger]

The function getTarget returns an empty string for the 3 components in this PR. The changes in this PR makes it return a valid string

[epernod]

ok so if I understand well, adding the template instantiations only in the cpp return empty string by getTarget Stange... from what I remembered there are several collision classes that are instantiate the same way in the plugin....