[Workload Management] Querygroup Lifecyle API docs

[kiranprakash154]

Description

Adds QueryGroup LifeCycle API related docs
Depends on #8228 to be merged.

Issues Resolved

Closes #8066

Version

2.17

Checklist

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[Naarcha-AWS]

@kiranprakash154: I see that this PR is still in draft mode. Is it ready for review?

[Naarcha-AWS]

@kiranprakash154: Is this due for 2.18?

[Naarcha-AWS]

Will likely be closed by #8628, but keeping open to use as an additional resource.