added explore button and removed unused feature openai key
# Description
Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.
## Checklist before requesting a review
Please delete options that are not relevant.
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged
## Screenshots (if appropriate):
* feat: update GET/brains return status
* feat: add public tag on brain list
* feat: add public tag for public brain on brain settings tab
* feat: hide over tab when brain access is public
* 🚚 move june analytics to folder and update paths
* ✨ set up google analytics
* ✨ sent firt GA event with react-ga
* 🔒️ update security headers to include vercel and google analytics
* 🚚 rename Vercel Analytics
* ✨ use react-ga4 instread
* 💚 fix tests
* 🔥 remove Suspense because no ssr in front anymore
* ✨ add debugging
* 🔥 remove debugger and better logs
* 🐛 fixed tracker by adding it to dependencies
* 🚨 add dependencies to hooks
* 🚨 remove linter warning from unawaited promise
* fix: new libraries for translation
* feat(deleting-brains-on-brain-management-page): adding a delete brain button and a confirmation modal on a management page
* feat(deleting-brains-on-brain-management-page): adding tests for confirmation Modal
* feat(deleting-brains-on-brain-management-page): Adding translation to the delete button and modal
* ♻️ use Single Responsibility Principle on brains_subscription
* ✨ new brain subscription endpoints for invited user
* 📝 add documentation to endpoints
* 🎨 add base_frontend_url to send custom url for brain share
* ✏️ brains instead of brain in url
* ✨ use origin in header for frontend url in subscription email
* 🚚 move and remove unused code
* ✨ new subscription API for BE endpoints in frontend
* ✨ new addBrain to add a shared brain in frontend
* 🥚 new hook for brain invitations
* ✨ new page for brain invitation
* ✨ change frontend url to copy for brain subscription
* ✏️ call RBAC with wrapper function
* ✏️ last typos
* refactor(MultipleBrain): separate providing and data fetching
* refactor(MultipleBrain): update useBrainApi
* feat(MultipleBrains): remove unnecessary data fetchings
* test(useBrainApi): update unit tests
* 🗑️ remove date input from fetch_user_id_from_credentials
* ♻️ refactor backend utils by splitting it into files
* 💡 comments for next actions to update /upload
* 🚚 move SupabaseProvider tp libs
* 🚚 move useAxios to hooks
* ♻️ refacto brain routes
* 🚨 update lintermfor paths
* ✨ new brain context provider
* ✨ new brain component in navbar
* 🚨 fix linter and async
* 🇸🇪 add feature flag for multiple-brains
