Context

• Youtube Quota rationing b/w creator signups and syncing service. youtube-synch#98

If the quota is fully exhausted (even this 2%), the BE will return specific error. (pls see linekd issue in the context section of this ticket).

We need a specific error to be shown on the App side in two cases: before the sign up is attempted, and during

Scope

• When quota on daily sign ups is reached before Auth flow is triggered, as soon as "Create channel and sign up" button is clicked display toaster notiff with "Due to high demand, we've reached the quota on the daily new sign ups. Please try again tomorrow."
• if the user is unlucky to be in the process of signing up during quota reached, get back to the Sign Up screen and display toaster notiff "Due to high demand, we've reached the quota on the daily new sign ups. Please try again tomorrow."