Start working on custom code-style/code-requirements file checker.
So far we check only for missing license, for non-standard EOL (\r) and
for files that not-compliant with clang-format.

So we easily know what version of cppcheck and clang-tidy
are we running. Compiler version is announced by CMake.

Recently we moved infrastructure repositories under a new path. Docker
registries have therefore moved too.  Reflect this in our CI settings.

Run install target of the build process.

Adapts Doxygen generators to changes in previous commit.

Remove CMakeLists.txt generator scripts from build phase. Replaced with
CMake's GLOB that can re-run every time the build is invoked. We can
also drop the Python dependency now.

Removed header installs which will be redesigned in future commits.

This reverts commit 572b1e23.
Wrong approach, we need to do this in builder repository.