Fix use of M_PI in steering_controllers_library and tricycle_controller

[traversaro]

The PR #1451 also accidentally deleted some _USE_MATH_DEFINES definition defined at the CMake level, that were added in #1036 . To fix this, I reintroduce the _USE_MATH_DEFINES, just at compilation unit level instead of CMake level, as discussed in ros-controls/ros2_control#2001 (comment) .

To send us a pull request, please:

• Fork the repository.
• Modify the source; please focus on the specific change you are contributing. If you also reformat all the code, it will be hard for us to focus on your change.
• Ensure local tests pass. (colcon test and pre-commit run (requires you to install pre-commit by pip3 install pre-commit)
• Commit to your fork using clear commit messages.
• Send a pull request, answering any default questions in the pull request interface.
• Pay attention to any automated CI failures reported in the pull request, and stay involved in the conversation.

[christophfroehlich]

Thx!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.27%. Comparing base (ae6efeb) to head (5cdcbf9).
Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1536   +/-   ##
=======================================
  Coverage   84.27%   84.27%           
=======================================
  Files         123      123           
  Lines       11359    11361    +2     
  Branches      961      962    +1     
=======================================
+ Hits         9573     9575    +2     
  Misses       1470     1470           
  Partials      316      316           

Flag	Coverage Δ
unittests	84.27% <ø> (+<0.01%)	⬆️

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

Files with missing lines	Coverage Δ
...ring_controllers_library/src/steering_odometry.cpp	82.53% <ø> (ø)
...ontrollers_library/test/test_steering_odometry.cpp	100.00% <ø> (ø)
tricycle_controller/src/tricycle_controller.cpp	66.80% <ø> (ø)

... and 4 files with indirect coverage changes