Implement CICD for Provider Proxy

[ygrishajev]

Once we have #539 closed we'd have most of our basic CICD needs covered. At that point we would have only a couple of our services ready and need to spread it to other apps.

Acceptance criteria:

• automated versioning and changelogs should be added to the referred app
• .github/workflows/create-pre-release-pr.yml should be updated to also include a referred app
• create release-${app}.yml workflow after existing examples
• create workflows to deploy after existing examples

Depends on #539