[web/BGRa] Recovered the display of the formula of the elastic tensor and a table

Add OGS_FATAL for not implemented/recognized element types.

CMake args tracking in exe and installations

Stores user-given CMake variables from the recent CMake run into cmake-args file. Install cmake-args file and CMakeCache.txt.

HC process revision

Note: The differences for the comparison of the comparison between ogs5 and ogs6 arose from an abs(..) which I added compared to Marc's approach. If I do the same for the calculation, there is no difference.

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-elder benchmark updated

-heterogenous HC benchmark reference files updated

-goswami benchmark temporarly removed from HC-tests

-SimplySynthetics: ConcentrationAndDiffusionOnly needed small changes in .prj file

-SimpleSynthetics: Project file adapted

-SimpleSynthetics :DiffusionAndStorageAndAdvection modified. Variable density model (p and c dependant) added, non boussinesq effects observed, consistency check,
		update of reference files

-SimpleSynthetics: DiffusionAndStorageAndGravityAndDispersionHalf- A new project has been set up, since the old setup was not converging anymore due to too large
		differences in density leading to problems in non boussinesq treatment.

-SimpleSynthetics: DiffusionAndStorageAndAdvectionAndDispersion- reference files updated. _max iter value in project file sligthly increased.

-SimpleSynthetics: DiffusionAndStorageAndAdvectionAndDecay- reference files updated. density model in prj file changed in order to account for storage.

-SimpleSynthetics: DiffusionAndStorageAndAdvectionAndDispersionHalf- reference files updated. density model in prj file changed in order to account for storage.

[HC] first annotations included

[HC] reduction to one shape matrix N

[HC] clang-format reformatting of branch

[Jenkins] New warnings publisher syntax

The warning is issued by MSVC:
Compiler Warning (level 3) C4197.
type' : top-level volatile in cast is ignored

These warnings seems not to appear any longer.

The XmlPrjInterface needs the OGSError::box, which is
part of the QtBase.

Python BCs: Hertz Contact test

_known_solutions->empty() must not be called otherwise there might be
PETSc errors, because not all ranks might execute the same PETSc calls.