### Details:
- This PR introduces a PR labeller for external PRs. It will add the
`ExternalPR` label to a PR whose author is not in the `openvino`
collaborator list.
It will not work from a PR as it has a `pull_request_target` trigger for
the secrets. I've tested it locally.
### Tickets:
- *135090*
### Details:
This PR introduces a GHA pipeline rerunner. It should scan the failed
workflows' logs and re-run those having known sporadic errors.
The rerunner is a Python script which is used by a dedicated workflow.
The workflow will not run from this PR, it needs to be in `master`. I've
checked the workflow and script in the private repo.
### Tickets:
- *136935*
### Details:
This PR includes changes to the metrics exporter workflow and a Python
script designed to read workflow metrics from GitHub API and send them
to a database
Andrei Kashchikhin