[MPL/WaterVapourLatentHeatWithCriticalTemperature] Correction

See merge request !1

 to WaterVapourLatentHeatWithCriticalTemperature

[PL/THM] Add initial_stress input.

See merge request ogs/ogs!3541

[HM] benchmark staggered scheme, use unit mD precisely and correct nondim time

See merge request ogs/ogs!3545

Change of nomenclature (in the documentation) of the physical constants in the Material Library

See merge request ogs/ogs!3543

[PhysicalConstant] changed const to constexpr

See merge request ogs/ogs!3544

[cmake] Replace file(REAL_PATH ..) with get_filename_component.

See merge request ogs/ogs!3540

Removes unintented CMake 3.19 requirement.

[ci] Doxygen warnings

See merge request ogs/ogs!3539

https://docs.gitlab.com/ee/ci/metrics_reports.html

[MPL] A vapour diffusion property of VapourDiffusionPMQ

See merge request ogs/ogs!3527

[CMake] Third-party license, ccache setup and msvc folder

See merge request ogs/ogs!3535

Using https://github.com/TheLartians/GroupSourcesByFolder.cmake and
CMAKE_FOLDER variable.

https://github.com/TheLartians/Ccache.cmake

No need to configure anything for ccache.

- New target write-licenses to write license file
third_party_licenses.txt
- License file is installed into ./share/info/

Base lib private members style

See merge request ogs/ogs!3525