CFV in CI

Introduce the CI chain for the CFV.

Initially this is supposed to be an identical setup as the electron setup. This is intentional to see the effect on computational load as the CFV geometries are slowly introduced.

PAL Edit: Redmine: Refs #3477

external/InstallGeometry.cmake

-set(GEOMETRY_VERSION e7414ba4c2e4b3fa27299a0ca5825023910ca4ab)
+set(GEOMETRY_VERSION 7e61a1da3155f614d11e8e8cea367f256989ed6d)
 set(GEOMETRY_SRC_URL "https://git.cbm.gsi.de/CbmSoft/cbmroot_geometry.git")
 
 download_project_if_needed(PROJECT         Geometry_source