Fix for IWYU, cppcheck and clang-tidy

This option only applies to C++, however it was being applied to both C
and C++ compilation calls. Using the CMake generator expression limits
the inclusion of this option to just the compiling of C++ files.

Infrastructure/CI runners have been restructured.

CI attempted to run jobs on riscv64 nodes when opensuse/fedora don't
have supported container images for that architecture.

The only purpose of the job was to create the 'ccov' directory in the
binary directory to store all the generated code coverage files.

Rather than generating the directory at build time using a target,t he
directory is now created at CMake generation time, meaning the build-
time target is no longer necessary.

Since these files were originally added, the libraries themselves have
added native CMake configuration files that can be used instead.

In addition to the current ARGS multi-value option which appends options
to the end of an executable call, PRE_ARGS instead prefixes items to the
call, to the end for of:
$PRE_ARGS ccov-* $ARGS

When cross-compiling, the used emulator will be prefixed to the call.

The assimp library now has pkg-config and CMake config files installed
by default, rendering this module script unnecessary.

When on macOS, if using the Apple-provided toolchain from XCode, also
use the same toolchain for code-coverage. The use of hybrid toolchains
does not go well.

Prefixed all code-coverage jobs with the operating system, added Windows
all code coverage jobs.

Add macOS AppleClang/Clang CI jobs

Expand testing to other architectures, with Linux is
amd64/arm64/ppc64le, macOS is amd64/arm64, and Windows is amd64.