Itk pixel bytestream encoding - in both AthReentrantAlgorithm and AthConstConverter

Pixel encoding was added also as an algorithm to allow configurability and functionality on the current PixelRDO_Container SG instances, since converter-based encoding first needs translation of PixelRDO_Container to ITkPixelRDO_Container in order to ensure a unique CLID. Appropriate conversion functions were templated, and some cleanup was performed in several places. Test JO are included for the algorithm-based encoding.

Decoding Algorithm was improved to read the encoded BS files and fetch the ROB fragments inside, making them ready for decoding.

Rotation of EC R0 modules was added into ITkPixelHitSortingTool to avoid potential problems with HitMap overflow, and to reflect the physical orientation of the corresponding chips.