Single Unified Header

Can you amend the build system to add an option to generate a single unified header? Let's call it `eepp.hpp`. It's a different beast compared to the current `ee.hpp`. It doesn't include other headers, but it's essentially flattening your project’s headers into one giant file. It's also not related to PCH. The reason I'm asking for this: I will distribute the library as one single unified header `eepp.hpp` and one shared library `eepp.dll`, together with `SDL2.dll`. I don't have to use any build system, just `g++ test.cpp eepp.dll SDL2.dll -o test`. Copilot said this can be done with just the C++ preprocessor. No external tools are required.