Test `@sentry/core/supabaseIntegration` with RN SDK

[krystofwoldrich]

Test the integration and document issues if any.

If non reexport the integration from the core package in the rn package and copy the JS docs into the RN SDK docs.

JS Core SDK PR:

feat: Add Supabase Integration by onurtemizkan · Pull Request #15719 · getsentry/sentry-javascript

How to add Supabase to a RN app:

Build a User Management App with Expo React Native | Supabase Docs

[krystofwoldrich]

Part of RN-185