Added 'is in remote control' call as a dashboard service

[urmahp]

This will fix #1195

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.

Project coverage is 5.11%. Comparing base (1b121b7) to head (5282740).
Report is 466 commits behind head on main.

Files with missing lines	Patch %	Lines
ur_robot_driver/src/dashboard_client_ros.cpp	0.00%	12 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main   #1433      +/-   ##
========================================
+ Coverage   3.59%   5.11%   +1.52%     
========================================
  Files         13      33      +20     
  Lines        947    3404    +2457     
  Branches     152     427     +275     
========================================
+ Hits          34     174     +140     
- Misses       843    3228    +2385     
+ Partials      70       2      -68     

Flag	Coverage Δ
unittests	5.11% <0.00%> (+1.52%)	⬆️

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[urfeex]

Looks good and works, but please add documentation to https://github.com/UniversalRobots/Universal_Robots_ROS2_Driver/blob/main/ur_robot_driver/doc/dashboard_client.rst

[urmahp]

I have added documentation, but the link I provided for the service doesn't exist yet as a new service type has been created.
4aa5964#diff-2ef7b991fcda5a9e699b32003462d05fefb9ac4fa1166ffc0093430d77b2c580R136