GUI improvements

[enryH]

Discuss what comes after #73 which currently needs a Python environment with python 3.12 and jupyter installed.

• have a GUI which requires a full vuegen installation locally -> small local build.
• add GUI as another entry point to the package
• try to ship virtual environment with jupyter installed to make it an entirely self-contained App
• add GUI tutorials to documentation (both live demos and other things)

[enryH]

• investigate if it is possible to add buttons for opening last log or report folder