Modernize CMake config#135

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thomasisensee wants to merge 8 commits intomainfrom

modernize-cmake-setup

Commits on Dec 8, 2025

Modernize CMake configuration and clean up build scripts
thomasisensee
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Remove setting CMP0074 to NEW explicitly, as it the default for CMake > 3.12
thomasisensee
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Commits on Dec 17, 2025

Since Catch2 is installed via FetchContent or included as a git submodule, we do not have to install it manually in CI
thomasisensee
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Commits on Dec 18, 2025

Reflect changed available C++ standards, with C++14 being the default and minimum
thomasisensee
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cmake: namespace targets, scope options, and guard app/docs builds
thomasisensee
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enable modern pybind11 FindPython
thomasisensee
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Commits on Dec 19, 2025