Export roller geometry in a way that is suitable for plotting

[GRPlan]

Export roller geometry in a way that is suitable for plotting.

E.g. as a closed polygon with all rollers rotated in correct positon.

[ChRen95]

Okay, so by going through all the other issues I will combine the tasks.

• Make the property contour_lines of class RollPass availabe in the export
• Make sure that the property is already in it's correct technological representation -> already handled by pyroll-core if the hooks orientation are set.

[axtimhaus]

Should already be solved with pyroll-project/pyroll-core#243 (except the "technological" orientation)

[ChRen95]

As agreed yesterday, we will add a hook for this in the core.