[FEATURE REQUEST] clientCertificate authentication

**Is your feature request related to a problem? Please describe.**
We need a clientCertificate authentication for our API, sure we can create our own listener, but I would love to have a option to setup something like that in a easy way.

**Describe the solution you'd like**
Option for the TLS/Letsencrypt Listener

**Describe alternatives you've considered**
Custome Listener

**Additional context**
If no clientCertificate is send and/or it not match with the authority it should return 403.