Supporting loading vector from configuration files with parenthesis

[traversaro]

See robotology/gazebo-yarp-plugins#677 , ideally we should propagate a similar change here.

fyi @xela-95

[traversaro]

Points of the code to modify:

• gz-sim-yarp-plugins/plugins/controlboard/src/ControlBoard.cpp

  Line 680 in fe4bbe6

  auto trajectoryTypeGroup = trajectoryGeneratorsGroup.findGroup("trajectory_type");

• gz-sim-yarp-plugins/plugins/controlboard/src/ControlBoard.cpp

  Line 443 in fe4bbe6

  pidParamGroup = pidGroup.findGroup("controlUnits");

• gz-sim-yarp-plugins/plugins/controlboard/src/ControlBoard.cpp

  Line 463 in fe4bbe6

  pidParamGroup = pidGroup.findGroup("controlLaw");

• gz-sim-yarp-plugins/plugins/controlboard/src/ControlBoard.cpp

  Line 510 in fe4bbe6

  Bottle& tmp = in.findGroup(key, txt);

• gz-sim-yarp-plugins/plugins/controlboard/src/ControlBoard.cpp

  Line 680 in fe4bbe6

  auto trajectoryTypeGroup = trajectoryGeneratorsGroup.findGroup("trajectory_type");