Implement CI also for macOS. Test merge requests on our macOS 10.13 test system.
The pipline now consists of two steps with three different jobs. First the compliance
with the code formating rules is checked. If this step succeed the code is build and
tested on Linux and macOS. This step runs simultaneous on both platforms.

mCBM 2020: in time win evt builder, reject seeds if part of reference det cluster from previous seed

=> This should fix the problem that in AllowOverlap mode events where cloned/split due to the cluster size when using TOF as reference
=> a mean cluster size of <N> in the reference detector was leading to N events for each real seed in this mode!

Macro produces histograms of origin points for delta
electrons which hit a STS detector in mcbm_transport_beam.C
simulation.

- Adapt to new interface methods and provides examples/comments
- Add example lines for TOF as reference detector

- Add predefined EventBuilderDetector constants for each of the typical detectors
- Add interface methods taking EventBuilderDetector object as parameter
- Make all other interface methods use the EventBuilderDetector one
- Mark the methods using only ECbmModuleId as deprecated
- Update MQ device accordingly
- Disable clang-formatting in Init method of MQ device

mCBM 2020: make the time window event builder more generic by using internal parameter class + reformat after clang...

- auto-remove of detector from selection list if needed when setting it as reference detector (instead of simple warning)
- more explicit fatal message of TsMetaData array missing
- hand reformat & clang-format guards for the histograms instanciation

Use the latest versions of the external repositories for input, geometry
and parameters.

x and y coordinates where switched in SetBeamAngle() call. Fixed.