* tls: modularize client authentication trusted CA
* add `omitempty` to `CARaw`
* docs
* initial caddyfile support
* revert anything related to leaf cert validation
The certs are used differently than the CA pool flow
* complete caddyfile unmarshalling implementation
* Caddyfile syntax documentation
* enhance caddyfile parsing and documentation
Apply suggestions from code review
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
* add client_auth caddyfile tests
* add caddyfile unmarshalling tests
* fix and add missed adapt tests
* fix rebase issue
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Co-authored-by: Francis Lavoie <lavofr@gmail.com>