regression reporter: automatic regression analysis

**As a regression reporter, I want KernelCI to provide extended information about a regression that helps me investigate it.**

## Background

When a regression is reported, having the version of the first kernel that failed and the logs is only part of the picture. Many times it's also useful to take a look at how the same kernel version worked for this test on other devices, whether different kernel configs had different results or not and what was going on in the same machine on the same lab around the same time of the test to rule out possible lab/setup problems.

KernelCI already contains all this information and it could provide a rough analysis for each regression report to help narrow down the investigation.

No files, tests, or entry points are named. Start by tracing how KernelCI currently creates regression reports and where it exposes kernel versions, logs, device results, configurations, and lab context. Done means a defined automatic analysis is integrated into each regression report and provides useful investigation context.

Written by the indexing model from the issue text.