Add low-level RF functions Initialize() and ReadPartInfo()

[danielschloms]

Description

The relevant code is taken from the mountain field test branch, but there are minimal changes to be able to compile it with the master branch as the base.

Fixes #188
Fixes #189

[PatrickKa]

• Make all tests pass
• Remove unused headers from Rf.hpp
• Right now, Rf.cpp includes headers that are already included in Rf.hpp. If that is still the case after finishing the first point, remove them, since this is the only exception to the rule "Directly include everything you use".
• Why does RfNames.hpp exist? It provides nothing that is required for the public interfaces defined in Rf.hpp. Therefore, all of RfNames.hpp should be private, i.e., in the source file Rf.cpp.
• Remove uciUart from Rf.test.cpp since it is never used. Don't forget to also remove the related includes that become unused and check target_link_libraries().

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (52ccd2b) 87.35% compared to head (cd20424) 87.35%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #250   +/-   ##
=======================================
  Coverage   87.35%   87.35%           
=======================================
  Files          18       18           
  Lines         514      514           
=======================================
  Hits          449      449           
  Misses         65       65           

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