Add param/return list reflection + autodiff stub (so far just differe… #874

Job	Run time
build-windows	43s
build-unix-like (ubuntu-22.04, g++-10, c++20)	23s
build-unix-like (ubuntu-22.04, g++-11, c++20)	21s
build-unix-like (ubuntu-22.04, g++-11, c++2b)	37s
build-unix-like (ubuntu-22.04, g++-12, c++20)	39s
build-unix-like (ubuntu-22.04, g++-12, c++2b)	24s
build-unix-like (ubuntu-22.04, clang++-12, c++20)	36s
build-unix-like (ubuntu-22.04, clang++-14, c++20)	22s
build-unix-like (macos-latest, clang++, c++20)	14s
build-unix-like (ubuntu-22.04, clang++-15, c++20)	39s
build-unix-like (ubuntu-24.04, clang++-16, c++20)	28s
build-unix-like (ubuntu-24.04, clang++-17, c++20)	25s
build-unix-like (ubuntu-24.04, clang++-18, c++20)	20s
build-unix-like (ubuntu-24.04, clang++-18, c++23)	22s
build-unix-like (ubuntu-24.04, g++-14, c++2b)	19s
	6m 52s

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