oe-build-perf-report: filter used measurements for each commit

oe-build-perf-report: filter used measurements for each commit

Fixing some buildperf issue [1] occurring after the bitbake-setup
switch.

I was tempted to send this as an RFC, as I'm not really sure if this the
best solution here. I decided to filter-out the entries with different
metadata, but we could also want to merge them or integrate them as
different results.

[1] https://bugzilla.yoctoproject.org/show_bug.cgi?id=16014

To: openembedded-core@lists.openembedded.org
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
---
Changes in v2:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v1: https://lore.kernel.org/r/20251022-mathieu-buildperf-multi-bitbake-commits-v1-1-180328529ea5@bootlin.com

--- b4-submit-tracking ---
# This section is used internally by b4 prep for tracking purposes.
{
  "series": {
    "revision": 2,
    "change-id": "20251022-mathieu-buildperf-multi-bitbake-commits-ba7909d894dc",
    "prefixes": [],
    "history": {
      "v1": [
        "20251022-mathieu-buildperf-multi-bitbake-commits-v1-1-180328529ea5@bootlin.com"
      ]
    }
  }
}