[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?

[bakpaul]

To add it to the perf tests, we first need to enable running python scripts, which is not an issue. And then we will only need to add the filename inside the .performance-tests file inside of the repo. I'll do it one this PR is ready to be merged.