refactor: Log level documentation on SolverBase and children

[arng40]

This PR is the first iteration to document all logLevel in GEOS and to invite the contributors to set descriptions when they enable the logLevel wrapper:
In the first iteration, the work of this PR would be limited to Solverbase and its children.

Currently, we have this output in all Group documentation files:

========= ========= ======== ================
Name      Type      Default  Description                                                                             
========= ========= ======== ================
[...]
logLevel  integer   0        Log level     
========= ========= ======== ================

This PR allows to add more context to all logLevels of GEOS:

I.e. SolidMechanics_LagrangianFEM.rst :

========= ========= ======== ========================================================================================
Name      Type      Default  Description                                                                             
========= ========= ======== ========================================================================================
[...]
logLevel  integer   0        | Sets the level of information to write in the standard output (the console typically).
                             | A level of 0 outputs minimal information, higher levels require more.                 
                             | 1                                                                         
                             |  - Information on line search                                                         
                             |  - Information on global solution scaling factor                                      
                             |  - Information on the timestep                                                        
                             |  - Print residual norm                                                                                               
                             |  - Information about testing new configuration and print the time step                                             
                             |  - Information about line search failed                                                                                             
                             |  - Information on number of iterations and residual reduction                                                              
                             |  - Information on each newton Iteration                                                               
                             |  - Indicate allowed residual norm                                                     
                             | 2                                                                         
                             |  - Output to screen the assembled linear system and solutions (matrices and vectors)  
                             |  - Infos on residuals values                                                                                                        
                             |  - Warning about boundary conditions                                                  
                             | 3                                                                         
                             |  - Output to file the assembled linear system and solutions (matrices and vectors)    
========= ========= ======== ========================================================================================

In this PR, both of the mechanism will exists at the same times, the old one will be marked as deprecated. The upcoming PR will remove it and document all other groups.

/// [DEPRECATED] Enable verbosity input for object
void enableLogLevelInput();

[arng40]

@CusiniM I just updated my branch with pavel's pr, it should looks good now

[paveltomin]

please figure out what can be done with line break for residuals output, otherwise it should be good to go

[paveltomin]

and there are few places in wave solvers that I didn't really touch but they should be changed for consistency

[MelReyCG]

• You may have forgotten SourceFluxStatistics & SolverStatistics (with logInfo::Statistics)

[paveltomin]

this was around the top of the queue, no?
somehow felt back into "in review" but should be good to merge?

[MelReyCG]

@victorapm 's requests seem to be adressed as well as mines, so I think this PR is right to be merged.
There will be a follow-up PR for the other messages.