Add a Mechanica Tree

[StephaneWuest]

As in Drawing and Mecanism, to have a Mechanica tree.

[ToddKraft]

This is a consideration for future improvement to the organization inside the model tree.  There is a clear separation and in Creo 7.0, there is a line that makes a more clear separation from where the main model tree is and the Creo Simulate definitions.

Thank you,

Todd Kraft

Creo Product Manager