codeintel: Add empty code intelligence badge to repository page
Created by: efritz
This PR adds an empty component guarded by an experimental user feature flag that appears on the repository page. We will soon fill out this component to include code intelligence status data for the current blob/tree/repo.
I've opted to draft this PR first without any content to separate the initial concerns of:
- what do we show (feature flags)
- what can we query (oss vs enterprise split)
Test plan
This PR should not change any default behavior in the UI and does not touch any backend code.