[FEM] Add support for elasticity of prisms

[alxbilger]

This PR adds the 2 components PrismCorotationalFEMForceField and PrismLinearSmallStrainFEMForceField making it possible to compute FEM elasticity on prism elements.

Note: the specialized class FiniteElement<Prism> works also with the mass introduced in #6061, but it is not in this PR to make them independent.

[with-all-tests]

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Reviewers will merge this pull-request only if

• it builds with SUCCESS for all platforms on the CI.
• it does not generate new warnings.
• it does not generate new unit test failures.
• it does not generate new scene test failures.
• it does not break API compatibility.
• it is more than 1 week old (or has fast-merge label).

[fredroy]

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