Made genereic QueueType in Queue algorithms (objectstore)

common/optional.hpp

objectstore/Algorithms.hpp

objectstore/AlgorithmsTest.cpp

objectstore/ArchiveQueueAlgorithms.hpp

objectstore/ArchiveQueueFailedAlgorithms.cpp

objectstore/ArchiveQueueToReportAlgorithms.cpp

objectstore/ArchiveQueueToTransferAlgorithms.cpp

objectstore/GarbageCollector.cpp

objectstore/RepackQueueAlgorithms.hpp

objectstore/RepackQueuePendingAlgorithms.cpp

objectstore/RepackQueueToExpandAlgorithms.cpp

objectstore/RetrieveQueueAlgorithms.hpp

objectstore/RetrieveQueueFailedAlgorithms.cpp

objectstore/RetrieveQueueToReportAlgorithms.cpp

objectstore/RetrieveQueueToTransferAlgorithms.cpp

scheduler/CMakeLists.txt

scheduler/OStoreDB/OStoreDB.cpp

scheduler/RepackRequestManager.cpp

scheduler/Scheduler.cpp

scheduler/Scheduler.hpp