Examples for the ROS2 driver

[URJala]

This does not necessarily need to be merged, but with a PR it is at least available to people.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 5.74%. Comparing base (1b121b7) to head (3122b7e).
⚠️ Report is 561 commits behind head on main.

Files with missing lines	Patch %	Lines
...rollers/src/scaled_joint_trajectory_controller.cpp	0.00%	21 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main   #1254      +/-   ##
========================================
+ Coverage   3.59%   5.74%   +2.15%     
========================================
  Files         13      31      +18     
  Lines        947    3031    +2084     
  Branches     152     375     +223     
========================================
+ Hits          34     174     +140     
- Misses       843    2855    +2012     
+ Partials      70       2      -68     

Flag	Coverage Δ
unittests	5.74% <0.00%> (+2.15%)	⬆️

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