start pycabana

[adeebshihadeh]

Just a proposal, but there's three goals here:

1. C++ -> Python for less duplication: panda, opendbc CAN tools, etc
2. Remove Qt We already removed it for the openpilot ui, but still need to install it for the tools. I think ultimately this ends up being written as DearPyGui or raylib (same as openpilot's ui), but PySide6 allows us to just mechanically translate cabana for now and it's a bit easier to install (thanks to uv) than C++ Qt through apt/brew.
3. It's a path to PlotJuggler 2.0 #35942 Instead of starting by re-implementing PlotJuggler in Python, we translate cabana to Python, then port over any missing functionality from PlotJuggler.

[adeebshihadeh]

@deanlee what do you think?

[deanlee]

Sounds reasonable. We may lose some features in the translation, but that’s fine as long as the Python version can meet the performance needs for real-time analysis.