Add feature flag type Ops (RUN AS-IF-FOSS)

What does this MR do?

Related to: #30228 (closed)

Resolves: #221054 (closed)

Builds and is based on top of !34269 (merged).

This adds a feature flag type :ops.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content