Rename ackermann msg to controller state msg type

[christophfroehlich]

This is #836 with fixed merge conflicts. Sorry @mbharatheesha that it took us a while ;)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.79%. Comparing base (e2e3df0) to head (32561e2).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1662   +/-   ##
=======================================
  Coverage   84.79%   84.79%           
=======================================
  Files         127      127           
  Lines       12114    12114           
  Branches     1036     1036           
=======================================
  Hits        10272    10272           
  Misses       1503     1503           
  Partials      339      339           

Flag	Coverage Δ
unittests	84.79% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...roller/test/test_ackermann_steering_controller.hpp	87.61% <ø> (ø)
...ntroller/test/test_bicycle_steering_controller.hpp	84.70% <ø> (ø)
...llers_library/src/steering_controllers_library.cpp	70.47% <100.00%> (ø)
...library/test/test_steering_controllers_library.hpp	97.22% <ø> (ø)
...troller/test/test_tricycle_steering_controller.hpp	86.31% <ø> (ø)

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[mbharatheesha]

This is #836 with fixed merge conflicts. Sorry @mbharatheesha that it took us a while ;)

@christophfroehlich Thank you and also sorry from my side I couldn't follow up on this last week. Glad it's merged!