Require workbench addons to announce version number when FreeCAD is loaded

[luzpaz]

IMHO when booting FreeCAD this is useful to see Assembly4 workbench (v0.11.10) loaded
I think we should make this standard for

$ freecad-ppd.freecad 
FreeCAD 0.20, Libs: 0.20R28186 (Git)
© Juergen Riegel, Werner Mayer, Yorik van Havre and others 2001-2022
FreeCAD is free and open-source software licensed under the terms of LGPL2+ license.
FreeCAD wouldn't be possible without FreeCAD community.
  #####                 ####  ###   ####  
  #                    #      # #   #   # 
  #     ##  #### ####  #     #   #  #   # 
  ####  # # #  # #  #  #     #####  #   # 
  #     #   #### ####  #    #     # #   # 
  #     #   #    #     #    #     # #   #  ##  ##  ##
  #     #   #### ####   ### #     # ####   ##  ##  ##

Assembly4 workbench (v0.11.10) loaded
Sheet Metal workbench loaded

Looks liks @zolko123 leverages metadata ?
https://github.com/Zolko-123/FreeCAD_Assembly4/blob/b57a811eefc21c9d751746703af41f1356d70087/Init.py#L49