[Example] Convert Torusfall XML scene to SofaPython3 scene

[fredroy]

I wanted to test different solver or model for each torus but it was a pain in the xml file to apply to all the toruses.
Moreover it was quite unreadable because of the length of the scene, the long strings, etc.

So I ask Claude to rewrite and refactor in python

The cylinders part can be customized (increasing/decreasing the numbers).
I wanted to do the same with the toruses but it was a pain to find a programmatically way to compute them so I let as it is for now.

[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).

[bakpaul]

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

[hugtalbot]

I am sorry to intervene on this PR after the SOFA dev meeting.
I would have advocated for keeping the XML version.
Else, we should define that we aim at replacing all XML scenes in the main SOFA repository.

[hugtalbot]

@bakpaul how to add it in the PerformanceRegressionTests?