davisking/dlib ? reverse-engineered prompt

Build me a clean, easy to use C++ machine learning library project like dlib, with a few working example programs and the ability to compile with CMake.

I want it to feel like a real toolkit for solving practical problems, not just a toy demo. Please include a small set of example apps that show how to use the library in common ways, and make sure the project can also be installed and used from Python. It should be straightforward to build on a normal computer, and if there are performance options for newer CPUs, support that too.

Also add basic tests so I can confirm everything is working after a build. Keep the setup simple, well organized, and ready for someone to clone and run without a lot of manual steps. If you need to check the latest build or packaging docs online while doing it, go ahead.