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[tests] Cleanly terminate hppcorbaserver.

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Better handle default port

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  When creating a client, environment variable HPP_PORT was not really
  taken into account. This commit fixes this issue and allows to control
  parallel instances of hppcorbaserver on different ports only by specifying
  variable HPP_PORT.

Spline steering method takes the distance as input. 

updates:
- [github.com/pre-commit/mirrors-clang-format: v15.0.4 → v15.0.6](https://github.com/pre-commit/mirrors-clang-format/compare/v15.0.4...v15.0.6)
- [github.com/psf/black: 22.10.0 → 22.12.0](https://github.com/psf/black/compare/22.10.0...22.12.0)

ref. https://github.com/humanoid-path-planner/hpp-corbaserver/pull/183#discussion_r1045612684

CMake: findpython is already called

make code robust to boost/std shared_ptr for fcl object

Expose spline steering method

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updates:
- [github.com/pre-commit/pre-commit-hooks: v4.3.0 → v4.4.0](https://github.com/pre-commit/pre-commit-hooks/compare/v4.3.0...v4.4.0)
- [github.com/PyCQA/flake8: 5.0.4 → 6.0.0](https://github.com/PyCQA/flake8/compare/5.0.4...6.0.0)

for more information, see https://pre-commit.ci

for more information, see https://pre-commit.ci

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v14.0.6 → v15.0.4](https://github.com/pre-commit/mirrors-clang-format/compare/v14.0.6...v15.0.4)
- [github.com/psf/black: 22.8.0 → 22.10.0](https://github.com/psf/black/compare/22.8.0...22.10.0)

[pre-commit.ci] pre-commit autoupdate