Fix Namespace list API for compliance framework

What does this MR do?

!54088 (merged) updated feature flag and license check for compliance_framework attribute to namespace level. This change was made to support the enablement of the feature for individual namespaces in gitlab.com.

compliance_frameworks attribute in Namespace list API is currently guarded by a global FF check.

This MR adds a resolver for compliance_framework attribute and checks if the current user has the ability to admin compliance frameworks in the namespace under consideration.

Screenshots (strongly suggested)

Before	After

Does this MR meet the acceptance criteria?

Conformity

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