cabana: refactor HistoryLog for simplification and enhancements

[deanlee]

This PR focus on simplifying the HistoryLog code, which has remained largely unchanged since its initial release and is quite messy. It also introducing several improvements:

1. Time precision has been increased from two to three decimal places to match the precision used elsewhere in Cabana.
2. Display meaningful value descriptors instead of raw values.
3. Disable the export button when there is no data available.
   
4. Fixed the issue where the initial active byte color values were incorrect after seeking.
5. Fixed a bug where canFetchMore() incorrectly returned true when there was no more data available.
6. Improved the performance of the fetchData() function.

[github-actions]

Thanks for contributing to openpilot! In order for us to review your PR as quickly as possible, check the following:

• Convert your PR to a draft unless it's ready to review
• Read the contributing docs
• Before marking as "ready for review", ensure:
  • the goal is clearly stated in the description
  • all the tests are passing
  • the change is something we merge
  • include a route or your device' dongle ID if relevant