feat: find LLVM assets based on heuristics and GitHub/Website API + support LLVM/CMake/Ninja Arm + update default version LLVM to 18 + support installing yay on Arch + fix make/pipx/conan/gcovr/meson on MacOS ARM #1447

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2 errors and 8 warnings

Canceling since a higher priority waiting request for 'CI-llvm' exists

The operation was canceled.

setup-cpp was called without any arguments. Nothing to do.

Failed to install pipx: Error: Failed to install venv as it was not found via pip or the system package manager. Ignoring...

Error: Microsoft Visual Studio not found

Failed to install pipx: Error: Failed to install venv as it was not found via pip or the system package manager. Ignoring...

The following artifacts were uploaded using a version of actions/upload-artifact that is scheduled for deprecation: "dist", "exe". Please update your workflow to use v4 of the artifact actions. Learn more: https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/