If the path `https://${domain}/.well-known/` does not exists, we try to create `.well-known` folder in `portal_skins/custom` and use it directly.

/reviewed-on !1

If HOOK_CHAIN is enabled, deploy_challenge function will be called with arguments like :
  domain1 token_id1 token1 domain2 token_id2 token2 ...
but it is not supported with zope-hook.sh.