Enhancement: Lab and board identifier information in kci-dev --json output

kci-dev results boots --giturl 'https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git' --branch master --latest --json
For example throws out the following:
` {
"test_path": "boot",
"hardware": "rk3288-rock2-square",
"compatibles": [
"radxa,rock2-square",
"rockchip,rk3288"
],
"config": "multi_v7_defconfig",
"arch": "arm",
"status": "INCONCLUSIVE (status: MISS)",
"start_time": "2025-07-09T13:46:04.972000Z",
"log": "https://files.kernelci.org/baseline-arm-686e729c34612746bbbb15a4/log.txt.gz",
"id": "maestro:686e729c34612746bbbb15a4",
"dashboard": "https://dashboard.kernelci.org/build/maestro:686e729c34612746bbbb15a4"
}
`
It would be helpful to identify which lab the information came from and possibly if the lab has multiple boards, some sort of board identifier to know if the reported issue is specific to a type of board.

Start with the `kci-dev results boots --giturl ... --latest --json` entry point and trace how each result object is assembled. Identify the available lab and board identifiers, expose them in the JSON output, and verify that the example boot results include the new fields.

Written by the indexing model from the issue text.