Added new TockenBucket named `acmeClientFailLimit` to avoid being banned because of the [Failed validation limit](https://letsencrypt.org/docs/failed-validation-limit/) of Let's Encrypt.
The behaviour is similar to the other limiters blocking the `obtainCert` func ensuring rate under limit.
Co-authored-by: fsologureng <sologuren@estudiohum.cl>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/151
Reviewed-by: 6543 <6543@obermui.de>
Co-authored-by: Felipe Leopoldo Sologuren Gutiérrez <fsologureng@noreply.codeberg.org>
Co-committed-by: Felipe Leopoldo Sologuren Gutiérrez <fsologureng@noreply.codeberg.org>
c286b3b1d0