Reading of "intfor" files does not work

[BastiLoe]

🐛 Describe the bug
I am trying to read an intfor-File. I expect this to work as it is basically and 3dplot-File

🔢 To Reproduce
from lasso.dyna import D3plot
intfor = D3plot("intfor")

💘 Expected behavior
intfor is read.

📷 Screenshots
RuntimeError: Unknown file type '4'.

🖥️ Setup

• lasso-python version: [e.g. 1.5.1] 2.0.2
• OS: [e.g. iOS] Rocky Linux

ℹ️ Additional context
Add any other context about the problem here.

[codie3611]

Yes it's not supported atm. There are some extra sections differing which we are not taking care of.