Add Onboarding Screens

[letsintegreat]

When a user uses the app for the first time, they used be given an idea of what this app is all about, but instead they are directly directed to the auth page.

Website has a text slider about points and panels for current stats, we can add these information in the onboarding screen in a next/skip manner for users that are not logged in.

[justary27]

I think, we should focus more on app functionality rn, rather than the less important parts. But sure good suggestion: )