Fix setting auth config from api in state
Verify auth state before authenticating
Add showing openid providers on login
Parse auth config from /info
Add authentication through openid
Add openid auth component
Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/frontend/pulls/305
Co-Authored-By: konrad <konrad@kola-entertainments.de>
Co-Committed-By: konrad <konrad@kola-entertainments.de>
