Build Dbcs with scons

[LouisVelez]

1. Removes generated dbcs and adds gitignore
2. Builds dbcs with scons
   resolves Build generated DBCs with SCons #1309

[adeebshihadeh]

Nice job keeping this minimal!

Not sure what's up with the CI flakiness. Want to look into that?

[LouisVelez]

@adeebshihadeh, after analyzing the logs, it seems the job timeout of 1 minute was triggered because the runners didn't register with enough time left.

• Ubuntu Runner: Registered at 18:08:42. No issues here.
• Mac Runner: Registered at 18:09:33 (50s after Ubuntu), with a timeout request at 18:09:41 (8s later).
• Static Runner: Registered at 18:09:34 (51s after Ubuntu), with a timeout request at 18:09:46 (12 seconds later). Similarly affected.

Do we want to increase the timeout to 2m?

[adeebshihadeh]

I really wanted to keep the timeout at 1m... but it might not be possible.

@maxime-desroches can you decide what to do here?

[sshane]

don't forget the openpilot side of this! getting missing DBC errors and it's not building them

[maxime-desroches]

I confirmed that the timeout includes the time for the runner to pick up the job. A solution to still fail if the whole workflow takes more than 1 minutes would be to do something like this with composite actions:

    - uses: commaai/opendbc/timeout@master
    - name: job 1
      timeout-minutes: 1
      run: ...
    - name: job 2
      timeout-minutes: 1
      run: ...
    - uses: commaai/opendbc/timeout@master

The only downside is that the workflow would fail after having completed the jobs

[sshane]

The output_files is missing many generated files inside the brand folders generated from the Python files, so caching doesn't work with this.

@LouisVelez can you make sure that tesla_radar_bosch.dbc, tesla_radar_continental.dbc, hyundai_kia_mando_corner_radar.dbc, and hyundai_kia_mando_front_radar.dbc are included so they can be cleaned up/pulled from cached properly?

https://github.com/commaai/openpilot/actions/runs/11983606559/job/33413369982?pr=34088