Add unit test multiple_registration, fix register_symbolic_link_to_registered_type() for multiple successive registrations

+ currently produces a wonderful 36 errors :D

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.4.3 → v0.4.4](https://github.com/astral-sh/ruff-pre-commit/compare/v0.4.3...v0.4.4)
- [github.com/pre-commit/mirrors-clang-format: v18.1.4 → v18.1.5](https://github.com/pre-commit/mirrors-clang-format/compare/v18.1.4...v18.1.5)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.4.2 → v0.4.3](https://github.com/astral-sh/ruff-pre-commit/compare/v0.4.2...v0.4.3)

Add deprecation call policy. Backport from pinocchio bindings.

+ shortcut for different default messages

Co-authored-by: Justin Carpentier <justin.carpentier@inria.fr>

Add Contributing section to the readme

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.4.1 → v0.4.2](https://github.com/astral-sh/ruff-pre-commit/compare/v0.4.1...v0.4.2)

Closes https://github.com/stack-of-tasks/eigenpy/issues/460

Fix missing include for boost >= 1.85

Fix EigenToPy/EigenFromPy on Windows

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

core: Use same namespace scope

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.3.7 → v0.4.1](https://github.com/astral-sh/ruff-pre-commit/compare/v0.3.7...v0.4.1)
- [github.com/pre-commit/mirrors-clang-format: v18.1.3 → v18.1.4](https://github.com/pre-commit/mirrors-clang-format/compare/v18.1.3...v18.1.4)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.3.5 → v0.3.7](https://github.com/astral-sh/ruff-pre-commit/compare/v0.3.5...v0.3.7)