chore(operator): adds reusable workflow for opening PRs to hub repos

[JoaoBraveCoding]

What this PR does / why we need it:

This PR will automate the process of opening a PR to the Hub repos, like k8s-operatorhub/community-operators#3452

Once everything is set up we will be able to add to our release workflow the following:

  operator-hub-prod-release:
    needs: release
    uses: ./.github/workflows/reusable-operator-hub-release.yaml
    with:
      org: redhat-openshift-ecosystem
      repo: community-operators-prod
    secrets:
      GRAFANABOT_GITHUB_TOKEN: ${{ secrets.GRAFANABOT_GITHUB_TOKEN }}

  operator-hub-community-release:
    needs: release
    uses: ./.github/workflows/reusable-operator-hub-release.yaml
    with:
      org: k8s-operatorhub
      repo: community-operators
    secrets:
      GRAFANABOT_GITHUB_TOKEN: ${{ secrets.GRAFANABOT_GITHUB_TOKEN }}

4e49718 Adds a new workflow that would trigger automatic releases if there was a release with the tag operator/ to be seen what will be the best way to trigger

This work was inspired by how opentelemetry-operator releases open-telemetry/opentelemetry-operator#1573

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:
Before merging this we need approval from Grafana that we will be able to use grafanabot to the PR opening

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• CHANGELOG.md updated
  • If the change is worth mentioning in the release notes, add add-to-release-notes label
• Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md
• For Helm chart changes bump the Helm chart version in production/helm/loki/Chart.yaml and update production/helm/loki/CHANGELOG.md and production/helm/loki/README.md. Example PR
• If the change is deprecating or removing a configuration option, update the deprecated-config.yaml and deleted-config.yaml files respectively in the tools/deprecated-config-checker directory. Example PR

[trevorwhitney]

Need to fix the secret but I think this looks good!