Eliminate duplicate `universal_func_type` and generalize parameter extractor functions

[glwagner]

This PR eliminates the duplicate universal_func_type by properly extending UniversalFunctions.universal_func_type within the Parameters submodule.

It also generalizes the parameter extractor functions to make it easier to build user-defined AbstractSurfaceFluxesParameters.

Closes #145

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 15.38462% with 11 lines in your changes missing coverage. Please review.

Project coverage is 90.05%. Comparing base (4f06b46) to head (4f222bf). Report is 25 commits behind head on main.

Files	Patch %	Lines
src/Parameters.jl	15.38%	11 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #149 +/- ## ======================================= Coverage 90.05% 90.05% ======================================= Files 4 4 Lines 835 835 ======================================= Hits 752 752 Misses 83 83 ```

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