Rework Main Application from the ground up

This is a Draft of baseline changes in an effort to lidarview-based apps coherence, and applied in a near future to all LV-based apps.

Related to : lidarview-core!267 (merged)

Changelog

Rework MainWindow initialization

• Conform to Paraview mainWindow inheritance
• Sort verbatim PV / LV-Base common elements / App specifc elements
• Keep Base PV elements in the same order as the PV mainWindows for ease of maintenance
• Keep Base PV elements commented out if not used for ease of maintenance

Split pqLidarViewManager into LVCore basic features and LidarView-based app specific manager

• Used Paraview static singleton inheritance pattern
• Split associated PythonQt Decorators
• Renamed to lqLidarViewManager and lqLidarCoreManager

Reworked Custom VCR Controller

• Subclassed PV VCR controller for ease of maintenance
• Removed renderView dependency / init order criticality
• Removed useless cache variables

Reworked lqSensorWidget

• Allow checking for hasLidarSource() and bool isInLiveSensorMode(), instrumental in checking for "Live Stream mode"
• Added Signal lidarStreamModeChanged(bool); // Emitted when LidarStream are now present / absent.
• Added additional warning in lqSensorListWidget::onSourceRemoved(pqPipelineSource *src)

Reowrked Applogic

• Removed significant dead code portions
• Removed Ruler related code superseded by reaction
• Tweaked Grid Creation

Fixed UI Layout SettingRestoration

Shortened SOFTWARE_VEDOR from Kitware, Inc. to Kitware for coherence and prevent qtconfig directory name with space/comma.

Re-Hidden Paraview Common Filters following previous update.

Changes in vvMainWindow.cxx are massive, focus on the final form

TODO Updgrade submodules:

• LVCORE to fix-ruler
• Common-superbuild to master
• lidarview-superbuild to master

@nick.laurenson @jerome.dias @melanie.carriere @pierre.dellenbach