[build-system] Add CMake support (branch in repo)
Gitlab support for running the CI from branches originating in forks is non-trivial (or broken?) As such, this MR duplicates the feature branch staged in MR !1827 (merged) [build-system] Add CMake support.
which adds CMake building support to Octopus.
All MR discusses are present in MR !1827 (merged).