This PR introduces:
- a new script
- a new GH Workflow
- runtime reference spec files for `rococo` and `westend`
It brings a mechanism to check that part(s) of the runtimes' metadata
that should not change over time, actually did not change over time.
Ideally, the GHW should trigger when a release is edited but GH seem to
[have an issue](https://github.com/orgs/community/discussions/47794)
that prevents the trigger from working. This is why the check has been
implemented as `workflow_dispatch` for a start.
The `workflow_dispatch` requires a `release_id` that can be found using:
```
curl -s -H "Authorization: Bearer ${GITHUB_TOKEN}" \
https://api.github.com/repos/paritytech/polkadot-sdk/releases | \
jq '.[] | { name: .name, id: .id }'
```
as documented in the workflow.
A sample run can be seen
[here](https://github.com/chevdor/polkadot-sdk/actions/runs/6811176342).
PR prepares CI to the GitHub Merge Queues. All github actions that were
running in PR adjusted so they can run in the merge queues. Zombienet
jobs will do nothing during PRs but they will run during merge queues.
Jobs that will be skipped during PR:
- all zombienet jobs
- all publish docker jobs
Jobs that will be skipped during merge queue:
- check-labels
- check-prdoc
- pr-custom-review
- review trigger
cc https://github.com/paritytech/ci_cd/issues/862
Chevdor