feat(mst): add capability to save sorbate concentrations to binary file

[langevin-usgs]

Sorbate concentrations can now optionally be saved to a binary file. A new SORBATE FILEOUT <sorbatefile> option can be specified in the options block of the MST Package.

Also rewired some of the inheritance patterns in the transport model output routine to better support GWT and GWE.

Checklist of items for pull request

• Replaced section above with description of pull request
• Closed issue Add support for output of sorbed concentrations for GWT #2007
• Referenced issue or pull request Sorbed concentration output #2006 and Add support for output of sorbed concentrations for GWT #2007
• Added new test or modified an existing test
• Ran ruff on new and modified python scripts in .doc, autotests, doc, distribution, pymake, and utils subdirectories.
• Formatted new and modified Fortran source files with fprettify
• Added doxygen comments to new and modified procedures
• Updated definition files
• Updated develop.tex with a plain-language description of the bug fix, change, feature; required for changes that may affect users
• Removed checklist items not relevant to this pull request

For additional information see instructions for contributing and instructions for developing.

[emorway-usgs]

Looks good @langevin-usgs, and thanks for cleaning up some messy code I left behind in tsp.f90 [tsp_ot()]