adds coupling with wavefield injection from a SPECFEM simulation; adds Vs30 routines; updates setup scripts

[danielpeter]

• includes a fix for newer gcc compilers in scotch partitioning for LTS

[codecov]

Codecov Report

Attention: Patch coverage is 19.43128% with 1020 lines in your changes missing coverage. Please review.

Project coverage is 49.77%. Comparing base (725321e) to head (cfc5cfd).
Report is 27 commits behind head on devel.

Files with missing lines	Patch %	Lines
src/specfem3D/couple_with_injection.f90	14.80%	581 Missing ⚠️
src/generate_databases/model_vs30.f90	2.85%	136 Missing ⚠️
src/generate_databases/save_arrays_solver.F90	28.00%	90 Missing ⚠️
src/specfem3D/setup_sources_receivers.f90	10.30%	87 Missing ⚠️
...c/auxiliaries/create_movie_shakemap_AVS_DX_GMT.f90	0.00%	59 Missing ⚠️
src/specfem3D/compute_stacey_viscoelastic.F90	0.00%	22 Missing ⚠️
src/shared/read_parameter_file.F90	38.46%	16 Missing ⚠️
src/generate_databases/get_model.F90	38.88%	11 Missing ⚠️
src/specfem3D/compute_forces_viscoelastic.F90	14.28%	6 Missing ⚠️
src/specfem3D/locate_source.F90	87.23%	6 Missing ⚠️
... and 5 more

Additional details and impacted files

@@            Coverage Diff             @@
##            devel    #1777      +/-   ##
==========================================
- Coverage   50.47%   49.77%   -0.71%     
==========================================
  Files         271      272       +1     
  Lines       61845    62879    +1034     
==========================================
+ Hits        31216    31296      +80     
- Misses      30629    31583     +954     

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