Added new StereoStrip Segmentation

• Adds an angle to the 1D segmentation.

  new file: DDCore/include/DDSegmentation/StereoStrip.h modified: DDCore/src/SegmentationDictionary.h modified: DDCore/src/Segmentations.cpp modified: DDCore/src/plugins/ReadoutSegmentations.cpp new file: DDCore/src/segmentations/StereoStrip.cpp

merged

mentioned in commit 4c10dfc0