[DOC] Add Documentation for WorkloadManagement Settings

[ruai0511]

What do you want to do?

• Request a change to existing documentation
• Add new documentation
• Report a technical problem with the documentation
• Other

Tell us about your request. Provide a summary of the request.
Adding documentation for workload management settings. As per this PR: opensearch-project/OpenSearch#15028

*Version: List the OpenSearch version to which this issue applies, e.g. 2.14, 2.12--2.14, or all.
2.x

[Naarcha-AWS]

@ruai0511: Could you generate a PR detailing the workload management settings?

[jainankitk]

@Naarcha-AWS - Version label should be 2.17 I guess, since it will be released in the upcoming release

[Naarcha-AWS]

@jainankitk or @ruai0511 : Has there been any progress on this PR?

[ruai0511]

PR is opened here #8228