codeintel: expose code intelligence config UI pages to users
Created by: Numbers88s
🤔 Description
Currently the entire code intelligence UI (save for hovers) is protected in the graphql resolver layer and the UI and displayed to site-admins only.
This PR will allow users to see uploads/indexes for repositories they can see (and if they have contributor access, allow editing).
🔖 Relevant tickets
Fixes #24744 (closed)
🚀 GIF
What gif best describes this PR or how it makes you feel?