change method to obtain vecto version number: instead of reading out from dll, use (same) t4 macro to statically compile the version number as static property; slightly adapt build process to compile t4 macros

XMLHashProvider requires canonicalization method and digest method for hash computation, provides info about default methods and supported methods

Added Button in Gearbox-Form to export currently selected ShiftPolygon to a new .VGBS file in the job-file directory