Add CMake install and package logic

This adds CMake install and packaging logic to the project.

Yase can either be used via find_package from the build or install tree, or it can be integrated into a downstream project e.g. via FetchContent.

There is also the option to build a binary package via CPack: cmake --build build --target package

Doxygen API docs can be generated as well: cmake --build build --target agnostic_behavior_tree_doc

Cheers, Martin

The program was tested solely for our own use cases, which might differ from yours.

Martin Stump martin.stump@mercedes-benz.com on behalf of Mercedes-Benz Tech Innovation GmbH, Provider Information