[Qhull] Install with apt

[maxfirmbach]

Description and Context

Install Qhull with apt instead of our manual procedure.

I talked with @eulovi about the failing tests, which were already fixed in #1649.

[amgebauer]

Nice, thank you!

[c-p-schmidt]

Looks good. Do we have some information on the version in our documentation that needs to be updated as well?

[maxfirmbach]

@c-p-schmidt Not sure about the version. I did not check which version libqhull-dev uses.

[c-p-schmidt]

@c-p-schmidt Not sure about the version. I did not check which version libqhull-dev uses.

I just checked our documentation and did not find a version that we specify. Since we now do NOT install a specific version via an installation script, but use apt to install it, we should not mention a version IMO (at least as long as we are not aware of incompatibility of specific versions), because the version obtained by apt install is most likely varying across different OS versions.

FYI: Ubuntu 24.04, the Qhull version is 2020.2-6.