Fix GrabCalculationTest
Remove unnecessary includes
Remove libudev and librt dependencies

They are not needed for Prismatik immediately, only for its
dependencies.
Fix trayless mode
Add basic statistic to GrabberBase
Move LogWriter class to separate file
Fix wrong debug output formatting
Refactor grabber classes

Get rid of TimeredGrabber, move its functionality to GrabberBase.
Fix compilation on Windows platform