Allow retry in skipped pipelines [skip ci]

Description

During a release rush the CI is quite full, and one may want to commit and postpone the CI run, but this can be done currenlty only pushing a new commit or rewording the last one.

Sometime the [ci skip] annotation is viral enough to skip a pipeline in some protected branch after a merge, and in that case the burden is high, because one is forced to create a new MR with some minimal change, wait for the CI to complete, merge, and finally wait for the real CI run on the protected branch.

Proposal

Add an option to Retry e skipped pipeline

Links / references

Related issues: