Parallel II Estimator

[BDoignies]

PR Description

A new WIP branch for parallel Integral Invariant estimators.

Checklist

• I have installed and run the pre-commit hooks (cf CONTRIBUTING.md).
• Unit-test of your feature with Catch.
• Doxygen documentation of the code completed (classes, methods, types, members...)
• Documentation module page added or updated.
• New entry in the ChangeLog.md added.
• No warning raised in Debug mode.
• All continuous integration tests pass (Github Actions)

[BDoignies]

@dcoeurjo My last commit features the ordered (yet parallel version) of the estimator. I realized that because we rely on the input range for surfel, we have no need to build locally the surface and we can simply extract the required surfels from the range.

Not to blow my own trumpet, but I think the final code looks pretty good :) (And in my computer, even with only 2000 surfels and 4 threads it does run faster than the sequential one)

[dcoeurjo]

I will have a look, thanks.
In the meantime, could you please install the precommit scripts and run it on the edited files ?

[dcoeurjo]

Looks good to me. Just the doc is missing and some LGPL headers. I've added another domain splitter and a unit test for that.
Code should be in "kernel/domains/" subfolder by the way

[dcoeurjo]

add dgtal header

[dcoeurjo]

ownership missing ?
@file missing (cf doxygen error)

[dcoeurjo]

gel header here