Now the `clean` CI steps are run always for benchmarking jobs. We run the full `./run git-clean` before and after benchmarks. Benchmarks take long enough to make any savings by not cleaning negligible.
### Important Notes
This PR brings partial refactoring in the workflow generating code which was very dirty. I'll build on this further soon when adding proper aarch64 macOS support.
Also, some minor tweaks to the generation were made:
* not writing `always() &&` twice;
* run only the latter cleaning step for canceled jobs.
This PR updates the build script:
* fixed issue where program version check was not properly triggering;
* improved `git-clean` command to correctly clear Scala artifacts;
* added `run.ps1` wrapper to the build script that works better with PowerShell than `run.cmd`;
* increased timeouts to work around failures on macOS nightly builds;
* replaced depracated GitHub Actions APIs (set-output) with their new equivalents;
* workaround for issue with electron builder (python2 lookup) on newer macOS runner images;
* GUI and backend dispatches to cloud were completed;
* release workflow allows creating RC releases.
