feat: Add image for OpenSearch Dashboards

[labrenbe]

Build the image for Opensearch Dashboards including the securityDashboards plugin.

This image is still missing the SBOM generation.

Part of stackabletech/opensearch-operator#1

Description

Please add a description here.

Definition of Done Checklist

Note

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

• Changes are OpenShift compatible
• All added packages (via microdnf or otherwise) have a comment on why they are added
• Things not downloaded from Red Hat repositories should be mirrored in the Stackable repository and downloaded from there
• All packages should have (if available) signatures/hashes verified
• Add an entry to the CHANGELOG.md file
• Integration tests ran successfully

TIP: Running integration tests with a new product image

The image can be built and uploaded to the kind cluster with the following commands:

bake --product <product> --image-version <stackable-image-version>
kind load docker-image <image-tagged-with-the-major-version> --name=<name-of-your-test-cluster>

See the output of bake to retrieve the image tag for <image-tagged-with-the-major-version>.

[Techassi]

This PR also needs to add a workflow in .github/workflows similar to other products to be able to build this image via CI (dev and release versions).

[siegfriedweber]

I fear that still a lot of functionality is missing in the Stackable image.

This is how the upstream image looks like:

And this is the Stackable image:

[siegfriedweber]

LGTM