feat: instance archive pipeline

Description

This MR adds a new instance archive pipeline which removes the given instance and generates an openedx pipeline to sync changes.

Supporting information

N/A

Testing instructions

Steps to test the changes:

1. Proofread the code
2. Check the pipeline succeed https://gitlab.com/opencraft/ops/grove-stage-digitalocean/-/pipelines/538705903

Dependencies

N/A

Screenshots

N/A

Checklist

If any of the items below is not applicable, do not remove them, but put a check in it.

• All providers include the new feature/change
• All affected providers can provision new clusters
• Unit tests are added/updated
• Documentation is added/updated
• The TOOLS_CONTAINER_IMAGE_VERSION in [ci_vars.yml]((https://gitlab.com/opencraft/dev/grove/-/blob/main/tools-container/ci_vars.yml) is updated
• The grove-template repository is updated

Additional context

Add any other context about the merge request here.