Feature Flags: Contextual code references Empty state

Release notes

Problem to solve

Coming from #238540 (comment 488608007)

If a user does not have any contextual code references to their feature flags, this will offer them some in product guidance to help them get started

Proposal

If the user does not have any feature flag code references in their project the following text will appear formatted by a centered title followed by a sentence or two of descriptor text

No code references found

There are no code references to this feature flag. Learn more.

In a future iteration we will offer the user proactive code snippets according to the language of their project or will point them to feature flag examples