Update BOP commands to use progress indicator
Deleted wrong usage of progress indicator from bop operations
Added UserBreak() method to break execution boolean operation if progress indicator is used
Added method AnalyzeProgress() to calculate steps of progress indicator
Introduce BOPAlgo_ParallelAlgo which has myRange as a field to be used in parallel vector.
Provide suitable way of keeping the progress steps of operations.
Give meaningful names to progress scopes.
Propagate progress indicator into deeper methods of BOA.
Add progress indicator to BOPAlgo_BuilderFace and BOPAlgo_WireSplitter, BOPAlgo_BuilderSolid and BOPAlgo_ShellSplitter
-Create a new package BRepPreviewAPI, inherited from BRepPrimAPI to create both, valid and degenerative shapes
-Create a new class BRepPreviewAPI_MakeBox for working with a box
Preview can be vertex, edge, rectangle or box
-BRepPrim_GWedge: in the case of non-valid data, the exception does not happen in the constructor, but at the moment of access to the shape
-BRepPrimAPI_MakeBox: myWedge is now not private, but protected, because used in BRepPreviewAPI_MakeBox which inherits from BRepPrimAPI_MakeBox
-Add tests for checking of a creation a preview in tests/geometry/preview (vertex, edge, rectangle, box)
-Update a command "box": add new parameters
