support PartDesign based workflow

[s-light]

Feature-Request:

add an additional workflow that is compatible with the current PartDesign workflow:

• create main object for defining Join-Parameters
• then add a feature in every PartDesign body that should use this feature:
  • activate body
  • select face
  • add LCInterlocking Pad or Substract Feature with link to main object for common parameters

i think this way it is super easy and versatile to use...

no idea how much work this is- i think a big bunch of the nice ideas and features already there could be reused...