More Conan packages moved to CPM (2nd try)

See merge request ogs/ogs!3494

Does not interfere with CPM modules.

- Removed install COMPONENTs
- Made ogs the default component name
- Install only the default ogs component with CPack

Some web doc additions

See merge request ogs/ogs!3493

GMSH2OGS; extract boundary meshes

See merge request ogs/ogs!3482

Thanks to Shuang for reporting.

Testing conversion of the gmsh file removing the line elements from the
boundary and extracting them as additional boundary files.

Specifying strictly smaller criterion, does not allow
eps=0 to be used.

Using exact matching.

If the utility would be called gmsh2vtu, then this identification
would be outsourced (identifySubdomains tool). Now the user
expects proper OGS-usable boundary meshes to be generated.

Adding a new command line flag '-b'. With the flag being set, the line
elements (same as those removed by the '-e' flag) are extracted as
individual meshes. The new meshes are stored in files corresponding to
the material ids.

For external usage.

Is enabled when OGS_BUILD_GUI=ON

Fix growing mem consumption

See merge request ogs/ogs!3492

Thanks for Alireza for reporting!

Update the solid thermal expansion calculation in THM and TRM

See merge request ogs/ogs!3483

[T] Rule output to stdout in Snakemake.

See merge request ogs/ogs!3488