Hokuyo: Added simple GUI plugin

source/RobotAPI/drivers/HokuyoLaserUnit/HokuyoLaserUnit.cpp

source/RobotAPI/drivers/HokuyoLaserUnit/HokuyoLaserUnit.h

source/RobotAPI/gui-plugins/CMakeLists.txt

...ce/RobotAPI/gui-plugins/LaserScannerPlugin/CMakeLists.txt

...lugins/LaserScannerPlugin/LaserScannerPluginGuiPlugin.cpp

...-plugins/LaserScannerPlugin/LaserScannerPluginGuiPlugin.h

...ui-plugins/LaserScannerPlugin/LaserScannerPluginWidget.ui

...LaserScannerPlugin/LaserScannerPluginWidgetController.cpp

...s/LaserScannerPlugin/LaserScannerPluginWidgetController.h

source/RobotAPI/interface/units/LaserScannerUnit.ice