Rework CI jobs

[marenz2569]

The CI jobs for HIP and OneAPI are currently duplicated with multiple compilers. However the CMAKE_CXX_COMPILER is overwriten to hipcc or icx. This causes the jobs to effectively test the same thing.

DoD

• Remove duplicated CI jobs and group them by type of build. e.g. CUDA/HIP/OneAPI/normal build on linux.
  • Done with Infrastructure for Reference Tests #94
• Update the number of build cores according to https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners
  • Done with Infrastructure for Reference Tests #94
• Enable the usage of MacOS 14/15 for Arm64 builds
• possibility of caching for CUDA/HIP/OneAPI toolchain install
• Run clant-tidy on all build types (not only normal linux build)

Open Questions

• @rschoene With which compiler(s) should we test with the CUDA code?