Project metrics

[adeebshihadeh]

After optimizations efforts like #33083, it's important to make sure we keep things small.

I propose we track the following metrics in CI for all three supported platforms:

• fresh install time: curl openpilot.comma.ai | bash
• fresh build time: op build -c && op build
• size of Python venv: du -hs openpilot/.venv/
• size of the repo: du -hs openpilot/
• count of direct dependencies and their dependencies

It's important to keep these metrics simple. I'm imagining we track these for each supported platform