Add more info to the rigid element

[manuel1618]

The rigid element should have more info which could be useful to the user in the output

• config (RBE2 or RBE3)
• Is a Force attatched? If so, where (master, slave)?
• part locations? Think of a way which is easy for the user to check where the part is (comp id? location of centroid for slave nodes?)

Prepare this and put it into the instances, adapt the output, too.

[manuel1618]

Everything above is already done and I came up with more to implement:

• Moments (Torque)
• Connected 1D Elements