Update compile installation for Debian/Ubuntu

[jwrober]

No related issue, setting up a dev env for snapcraft helped me find the error

[blabber]

Just to make sure: do you really need both, g++ and clang? One is the GNU C++ compiler, the other contains the clang C++ compiler. I'd expect that I e of them should be enough (probably clang).

[blabber]

Just to make sure: do you really need both, g++ and clang? One is the GNU C++ compiler, the other contains the clang C++ compiler. I'd expect that I e of them should be enough (probably clang).

Ah, I see. It's clang-format, not clang...

[jwrober]

We only add clang-format, not the compiler. Cmake will get gcc, but not g++ for some reason on Ubuntu 24.04