Fixing gui import error and adding some minor convenience

[tobiglaser]

Fixing onelab path setup so I can show this repo to my professor with the gui working out of the box.

• gui is not a package and the script is in the same folder, so no prefix is needed.
• Reenable the commented out argument and function call. This way the popup will appear if no femmt/config.json is found.
• Change the default QTabs to the "Definition" rather then the empty "Simulation" tab.
• Ignore the working directory to keep git status clean.

[gituser789]

Thx!

[gituser789]

easy fix needed, as ruff has been upgraded in the meantime. As we are waiting for new ruff features, we require always the latest version of it.

just do

pip install ruff

and run

ruff check $(git ls-files '*.py') --fix 

this should fix the three issues for the pipeline.