feat: Support OPA role mapping

[Maleware]

Description

Contains:

• https://github.com/stackabletech/marispace-x/issues/97
  Opa role mapping according to linked ticket.

relies on https://github.com/stackabletech/docker-images/tree/feature/superset-opa-integration

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

# Author
- [x] Changes are OpenShift compatible
- [x] CRD changes approved
- [x] CRD documentation for all fields, following the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [x] Helm chart can be installed and deployed operator works
- [x] Integration tests passed (for non trivial changes)
- [x] Changes need to be "offline" compatible

# Reviewer
- [ ] Code contains useful comments
- [ ] Code contains useful logging statements
- [ ] (Integration-)Test cases added
- [ ] Documentation added or updated. Follows the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [ ] Changelog updated
- [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

# Acceptance
- [ ] Feature Tracker has been updated
- [ ] Proper release label has been added
- [ ] [Roadmap](https://github.com/orgs/stackabletech/projects/25/views/1) has been updated

[sbernauer]

Many thanks. LGTM when tests pass

[sbernauer]

LGTM when tests pass

[razvan]

OpenShift test 🟢

--- PASS: kuttl (315.53s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/opa_superset-4.1.1_opa-latest-1.0.1_openshift-true (314.71s)
PASS

[razvan]

🟢 Integration tests: https://testing.stackable.tech/job/superset-operator-it-custom/13/

[lfrancke]

Can you please link docs if we have any (sounds like we should) and add a release note snippet?

[sbernauer]

Nightly docs: https://docs.stackable.tech/home/nightly/superset/usage-guide/security/#_opa_role_mapping

[lfrancke]

@Techassi @labrenbe ping re: release notes please (even if they are already in the final ones)

[Techassi]

The final release notes @NickLarsenNZ and I came up with are:

* Apache Superset: Support Open Policy Agent role mapping. See #582.