* optional: expose to-value converter for boost::none_t (and std::nullopt_t if possible)

+ add src/optional.cpp to expose none types
+ this allows to have None as a default arg value for functions (also, shows up in stubs)
+ also allows to have none_t return/argument type

* Run pre-commit

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.2 → v16.0.3](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.2...v16.0.3)

Sync submodule cmake

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.1 → v16.0.2](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.1...v16.0.2)

Remove support of numpy.matrix class

Add example showing how to bind virtual classes, passing to overrides…

Add example showing how to bind virtual classes, passing to overrides by reference, registering shared_ptr, and overriding factories and data classes from Python

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.0 → v16.0.1](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.0...v16.0.1)

Fix CI + sync submodule cmake

Add util to expose optional types

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

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

+ unittest: make bind_optional and test_optional.py into template files
+ cmake: instantiate boost and std optional tests using configure_file

+ default is boost::optional<T>
+ add test for boost::optional

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 23.1.0 → 23.3.0](https://github.com/psf/black/compare/23.1.0...23.3.0)

fix INSTALL_RPATH on ROS & OSX

ref. https://github.com/stack-of-tasks/eigenpy/issues/353
ref. https://github.com/jrl-umi3218/jrl-cmakemodules/pull/588

Sync submodule cmake