feat: OPA Authorizer

[labrenbe]

Description

Adds support for authorization with OPA using Nifi OPA Plugin .

=== NAME  kuttl
    harness.go:408: run tests finished
    harness.go:516: cleaning up
    harness.go:573: removing temp folder: ""
--- PASS: kuttl (539.62s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/opa_nifi-1.27.0_zookeeper-latest-3.9.3_opa-latest-1.0.1_openshift-false (261.39s)
        --- PASS: kuttl/harness/opa_nifi-2.2.0_zookeeper-latest-3.9.3_opa-latest-1.0.1_openshift-false (268.44s)
        --- PASS: kuttl/harness/opa_nifi-1.28.1_zookeeper-latest-3.9.3_opa-latest-1.0.1_openshift-false (278.21s)
PASS

Should not be merged before: stackabletech/docker-images#1058

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
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Author

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1. Changes are OpenShift compatible
2. CRD changes approved
3. CRD documentation for all fields, following the style guide.
4. Helm chart can be installed and deployed operator works
5. Integration tests passed (for non trivial changes)
6. Changes need to be "offline" compatible

Reviewer

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1. Code contains useful comments
2. Code contains useful logging statements
3. (Integration-)Test cases added
4. Documentation added or updated. Follows the style guide.
5. Changelog updated
6. Cargo.toml only contains references to git tags (not specific commits or branches)

Acceptance

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1. Feature Tracker has been updated
2. Proper release label has been added
3. Roadmap has been updated