Added
* Added support for Rule Packages (RPK) created with CityEngine 2023.0
* Added support for textured initial shapes (also added the `maxDirRecursionDepth` argument to
the `InitialShape` class constructor to control searching for texture files)
* Added new API function `get_api_version` to get a list of the PRT (major, minor, build) components
Changed
* Updated to PRT 3.0.8905
* Updated to PyBind11 2.10.4
* Turned the `prt_DIR` and `pybind11_DIR` into proper CMake cache variables