Added `react-supabase` library to docs. [Docs](https://react-supabase.vercel.app) [GitHub](https://github.com/tmm/react-supabase)
This library differs from `useSupabase` in a few ways:
1/ *Light-weight context*
`react-supabase`'s context provider only stores the Supabase `client` while `useSupabase`'s context provider keeps track of the client, auth state, and fetched tables. Some folks might not want a root context to manage all these things due to rerenders, they want to handle request caching in [SWR](https://swr.vercel.app) or [React Query](https://react-query.tanstack.com/), etc.
2/ *Reactivity*
`react-supabase` hooks manage state internally and automatically update so you don't need to `useState` to set data, loading, errors, etc. `useSupabase` does not use this pattern (with the exception of `useTable`).
3/ *More hooks*
`react-supbase` hooks:
- general `useClient`
- auth `useAuthStateChange`, `useResetPassword`, `useSignIn`, `useSignOut`, `useSignUp`
- data `useDelete`, `useFilter`, `useInsert`, `useSelect`, `useUpdate`
- realtime `useSubscription` `useRealtime`
- storage coming soon
`useSupabase` hooks: `useSupabase`, `useUser`, `useTable`
4/ *Composable hooks*
- [`useAuthStateChange`](https://react-supabase.vercel.app/documentation/auth/use-auth-state-change) can be used to create your own auth state management system and not have to worry about cleaning up the auth listener. (See recipe [`useAuth`](https://react-supabase.vercel.app/recipes/use-auth).)
- [`useSubscription`](https://react-supabase.vercel.app/documentation/realtime/use-subscription) allows folks to subscribe for changes in an idiomatic React way.
5/ *TypeScript support*
`react-supabase` has more complete TypeScript support with generics. `useSupabase` does not.
- Updated auth example to handle this.
- signUp function now gives error if the user is already registered.
- signIn function gives error when invalid email or password is entered.
zernonia