195 windows 11 pyroll run gets stuck in an endless loop due to problems with kaleido package

[RichardPfr]

Made some changes to resolve issue #195 on our end:

Changed pyproject.toml to install kaleido version 0.1.0.post1 when istalling pyroll-core[plotly] on Windows.

• this could also be changed to also check wether it is Windows 11, as its supposedly only an issue with that, but i cant confirm/ test, wheter or not this isnt also occuring on other windows versions.

Changed __init__.py to, when checking for available plotting backend, also raise an error on windows machines, if the wrong kaleido version is installed:

• if the wrong kaleido version is installed this will now raise ValueError("Kaleido Version 0.1.0.post1 is required to use plotly on Windows machines") when importing pyroll-core
• if plotly but no kaleido is installed the message print("The kaleido package is required if plotly is to be used") is output when importing pyroll-core
  • this could also be changed to raise an error here, as otherwise the error will occur when trying to export a image from plotly using to_image