Use bit array instead of bool implicit

Filters/HyperTree/CMakeLists.txt

...HyperTree/Testing/Cxx/TestHyperTreeGridGenerateFields.cxx

Filters/HyperTree/vtkHyperTreeGridCellSizeStrategy.cxx

Filters/HyperTree/vtkHyperTreeGridCellSizeStrategy.h

Filters/HyperTree/vtkHyperTreeGridGenerateFieldStrategy.h

Filters/HyperTree/vtkHyperTreeGridGenerateFields.cxx

Filters/HyperTree/vtkHyperTreeGridGenerateFields.h

.../HyperTree/vtkHyperTreeGridTotalVisibleVolumeStrategy.cxx

...rs/HyperTree/vtkHyperTreeGridTotalVisibleVolumeStrategy.h

Filters/HyperTree/vtkHyperTreeGridValidCellStrategy.cxx

Filters/HyperTree/vtkHyperTreeGridValidCellStrategy.h

Filters/HyperTree/vtkHyperTreeGridVisibleLeavesSize.cxx

Filters/HyperTree/vtkHyperTreeGridVisibleLeavesSize.h

Filters/HyperTree/vtkScalarBooleanImplicitBackend.h