RHIDP-6572: [Docs] Document installation process (Helm-based) for orchestrator in RHDH#1264

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jmagak:RHIDP-6572-Document-installation-process-Helm-based-for-orchestrator-in-RHDHjmagak/red-hat-developers-documentation-rhdh:RHIDP-6572-Document-installation-process-Helm-based-for-orchestrator-in-RHDHCopy head branch name to clipboard