Metrics

In the interest of measuring success of KernelCI, other than tracking how often people refer to it with "Reported by" trailers in their patches, we could establish a framework for some based on KCIDB data, which would eventually lead to some insights about the potential of KernelCI tests and reports.

Perhaps we can get some inspiration from:
- https://gitlab.com/Linaro/lkft/triggers/lkft-stats
- https://stats.lkft.linaro.org/

No file, test, or entry point is named. Start by reviewing how the dashboard accesses KCIDB data and the linked LKFT stats examples; done would require an agreed metrics framework and a defined way to expose the resulting KernelCI insights.

Written by the indexing model from the issue text.