Added 'is in remote control' call as a dashboard service (backport #1433)

[mergify]

This will fix #1195

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This is an automatic backport of pull request #1433 done by Mergify.

[mergify]

Cherry-pick of 868f240 has failed:

On branch mergify/bp/humble/pr-1433
Your branch is up to date with 'origin/humble'.

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Changes to be committed:
	modified:   ur_dashboard_msgs/CMakeLists.txt
	new file:   ur_dashboard_msgs/srv/IsInRemoteControl.srv
	modified:   ur_robot_driver/include/ur_robot_driver/dashboard_client_ros.hpp
	modified:   ur_robot_driver/src/dashboard_client_ros.cpp

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   ur_robot_driver/doc/dashboard_client.rst

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally