[konflux] setup art-db custom task

[ashwindasr]

If the Jenkins pipeline fails due to some reason, after triggering konflux builds, the builds will still be running. Since the pipeline is not running anymore, we won't be able to store the status of the build, once it completes on Konflux.

Tekton has git resolvers that we can leverage for creating custom tasks. Task defined here: https://github.com/openshift-priv/art-konflux-template/blob/main/custom-tasks/art-store-to-db.yaml.

[openshift-ci]

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[ashwindasr]

Tested

/unhold

[openshift-ci]

@ashwindasr: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/security	b803188	link	false	/test security

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[openshift-merge-robot]

PR needs rebase.

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