Grafazos, Releases: Add [publish:release] job to Grafazos release pipeline

What

Depends on !17529 (merged)

This merge request introduces a job publish:release in grafazos_release_tag_test pipelines. This job is defined in grafazosL/ci/grafazos/ml.

This job publishes a gitlab release page for the triggered release of Grafazos.

Next steps:

• Add the assets to that gitlab release page

Why

How

We introduce grafazos/scripts/release.sh that allows to get the version and release name.

Then a script grafazos/scripts/create_gitlab_release.sh that publish the gitlab release page. It uses release.sh to do so.

Manually testing the MR

See https://gitlab.com/nomadic-labs/tezos/-/pipelines/1749116241 and https://gitlab.com/nomadic-labs/tezos/-/releases/grafazos-v1111.3

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR