[Geomagic plugin] Fix scenes

[epernod]

Following work with @ChristianDuriez at STC6, here is a way to fix the geomagic plugin scenes and recover behavior from before the PR on freeAnimationLoop and lambda function.

Also add:

• a second RigidSkull.scn example to show another way to map the haptic tool.
• A small bool to know if the haptic tool is in contact with an object.

---

This PR:

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

Reviewers will merge only if all these checks are true.

[damienmarchal]

Ready, so merge.