Consider recognizing deprecated keywords

[veenstrajelmer]

Is your feature request related to a problem? Please describe.
In #648 the FMModel and ResearchFMModel were updated to include all currently know research/GA keywords. However, there are several deprecated keywords registered in the FM kernel that are not recognized by HYDROLIB-core.

Describe the solution you'd like
It would be convenient if these keywords are filtered and a dedicated deprecation message would show up.

Additional context
Deprecated keywords registered in the FM kernel:

• 'processes','dtmassbalance',DEPRECATED
• 'geometry','bathymetryfile',OBSOLETE
• 'geometry','bedlevelfile',OBSOLETE
• 'geometry','botlevuni',OBSOLETE
• 'geometry','botlevtype',OBSOLETE
• 'geometry','ithindykescheme',OBSOLETE
• 'geometry','manholefile',OBSOLETE
• 'geometry','nooptimizedpolygon',OBSOLETE
• 'numerics','hkad',OBSOLETE
• 'numerics','ithindykescheme',OBSOLETE
• 'numerics','thindykecontraction',OBSOLETE
• 'numerics','transportmethod',OBSOLETE
• 'numerics','transporttimestepping',OBSOLETE
• 'output','writebalancefile',OBSOLETE
• some of these (and others) are documented in A.4 of the FM user manual, new ones: geometry.ThindykeFile

Some deprecated keywords are not yet registered here, these should be added to both HYDROLIB-core and the FM kernel:

• sobekdfm_umin >> renamed to Lateral_fixedweir_umin, but not in fm_deprecated_keywords.f90
• sobekdfm_umin_method >> renamed to Lateral_fixedweir_umin_method, but not in fm_deprecated_keywords.f90
• sobekdfm_minimal_1d2d_embankment >> deprecated, but not in fm_deprecated_keywords.f90
• sobekdfm_relax >> deprecated, but not in fm_deprecated_keywords.f90
• wridia_viscosity_diffusivity_limit >> deprecated, but not in fm_deprecated_keywords.f90
• stericcorrection >> deprecated, but not in fm_deprecated_keywords.f90
• wavenikuradse >> deprecated, but not in fm_deprecated_keywords.f90