Error (Block-) Logs in JSON Format

[superstes]

Summary

I have not seen any option in the documentation to change the error/block log format.

JSON format would make sense for many use-cases. Also the audit-logs seem to already support it.

Basic example

It would be nice to get this as json object:
[client \"::ffff:95.214.55.x\"] Coraza: Warning. Host header is a numeric IP address [file \"/etc/coraza-spoa/coreruleset/rules/@owasp_crs/REQUEST-920-PROTOCOL-ENFORCEMENT.conf\"] [line \"1772\"] [id \"920350\"] [rev \"\"] [msg \"Host header is a numeric IP address\"] [data \"159.69.187.x\"] [severity \"warning\"] [ver \"OWASP_CRS/4.0.0-rc2\"] [maturity \"0\"] [accuracy \"0\"] [tag \"application-multi\"] [tag \"language-multi\"] [tag \"platform-multi\"] [tag \"attack-protocol\"] [tag \"paranoia-level/1\"] [tag \"OWASP_CRS\"] [tag \"capec/1000/210/272\"] [tag \"PCI/6.5.10\"] [hostname \"::ffff:159.69.187.x\"] [uri \"/\"] [unique_id \"FMPGEMUVBOHBCEMH\"]

Motivation

JSON is much easier to parse than the stringified format.
Log systems like Graylog can parse JSON natively & easily. That is very convenient - especially as such security-logs are very important to process.

From what I've read into the source - this is where the logs are written: https://github.com/corazawaf/coraza/blob/main/internal/corazarules/rule_match.go#L238

Related to: #856, corazawaf/coraza-caddy#20, corazawaf/coraza-spoa#91, #1150

I'm open to contribute.