[SQSERVICES-1643] Servantify brig account API 8 - `POST /onboading/v3`#2707

battermann merged 2 commits intodevelopwireapp/wire-server:developfrom

SQSERVICES-1643-backend-servantify-brig-account-api-8-onboardingwireapp/wire-server:SQSERVICES-1643-backend-servantify-brig-account-api-8-onboardingCopy head branch name to clipboard