Cleanup/parameters for 3.8

What this MR does / why does DuMux need it:

With this merge request all non-recorded parameters read in from input parameter files should be addresses in doc/doxygen/extradoc/parameters.json.

Before you request a review from someone, make sure to revise the following points:

• does the new code follow the style guide?
• do the test pipelines pass? (see guide on how to run pipelines for a merge request)