Your checklist for this pull request

• I've documented or updated the documentation of every function and struct this PR changes.
• I've added tests that prove my fix is effective or that my feature works (if possible)

Detailed description

Rewrite FIB to use Python instead of C++. This minimizes tech debt, plus now that PANDA logs are in JSON, there is no need for C++

This allows for the deletion of the FIB C++ version in a later PR.

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Test plan

1. Confirm that this passes the same CI/CD
2. I can confirm that the number of bugs is the same, although the Python version has 10 more DUAs than the C++ version. This bug will be investigated later, but given that the number of bugs hasn't changed, it is likely not critical.

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Closing issues

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